Market

Data Center

As compute density rises, sensor instrumentation is critical for liquid cooling, immersion cooling and ambient environmental control in data centers.

Data center sensor portfolio

Sensing across every loop of the data center.

Thermal & fluid

Temperature, ΔP, flow, level and concentration across air, chilled-water, refrigerant and dielectric immersion loops.

Air quality & humidity

RH, CO₂, air velocity and dew-point for DCV, condensation risk, and harsh-environment monitoring.

Power & current

Busbar hot-spot IR, ring-terminal NTC, Hall-effect current, PTC inrush protection from PDU to BESS.

Safety & leak

H₂, LEL, A2L and point/rope leak detection — with functional-safety options for BESS & UPS.

Step 1 — Choose a sub-system

Where in the data center are you sensing?

Click any tile to filter the portfolio to that loop.

7 sub-systems

Sub-systemAir Cooling

Measurand

36 of 36

Not sure what you need? Tell us about your air cooling application and our team will recommend the right sensors.

Telaire

Low-ΔP / gauge / vacuum transmitter

Applications

CRAC/CRAH duct ΔP and static-pressure control
VAV damper feedback
Air-handler filter-health monitoring (pre/post filter ΔP)

Ranges: 0.3 – 10 inH₂O (9 codes)
Accuracy: ±1% of span
Models: T10 / T20 / T30 (V or 4–20 mA)

NovaSensor

NovaSensor NPI/IPT Harsh-Media Family

Applications

Whitespace pressurization control (positive or negative)
CRAC refrigerant-line high-side / low-side pressure

Range: 1 – 15,000 psi
Output: 4–20 mA, 0–5/10 V, I²C, SPI
Accuracy: ±0.25% FS

All Sensors

Panel-mount CoBeam2™ transmitter

Applications

CRAC/CRAH filter-health ΔP at low spans
Whitespace pressurization monitoring (bidirectional ±0.25 inH₂O)

Range: ±0.25 inH₂O bidirectional
Accuracy: ±0.5% FSO
Output: 4–20 mA (2-wire)

SSI

Compact media-isolated, oil-filled

Applications

CRAC compressor high/low-side pressure

Ranges: 15–7500 psi (G/A/S)
Accuracy: ±0.25% typ; ±1.0% FSS TEB
Output: 0.5–4.5 V · 1–5 V · 4–20 mA

NovaSensor

SMT MEMS + ASIC in miniature housing

Applications

OEM-integrated ΔP inside CRAC/CRAH controllers and VAV modules
Board-level duct and air-filter monitoring
Altitude / barometric compensation for airflow and RH sensors

Range: 2" H₂O to 30 PSI (A/D/G)
Output: Analog + I²C / SPI / SENT
Package: SOIC-14 SMT T&R

Custom variant

SMT tape-and-reel with customer-logo marking for OEM PCB integration; digital (I²C/SPI/SENT) and analog variants share pinout; barometric-only NPA-700 range for altitude compensation.

NovaSensor

Board-mount piezoresistive ΔP

Applications

CRAC compressor and refrigerant-line pressure (board-mount NPC into CRAC controllers)

Ranges: 10" H₂O – 100 psi (G/D/A)
Output: 50–150 mV piezoresistive
Linearity: ±0.1% FSO (±0.25% on 5 psi)

NovaSensor

Low-Cost Media-Compatible P+T

Applications

CRAC compressor high-side pressure
Refrigerant suction-line P+T in a single penetration

Tech: PT1907 MEMS die, no oil fill
Range: 15 – 600 psi
Output: I²C, SPI, 4–20 mA, Analog, SENT

Custom variant

LCMC is a platform, not a single SKU — specify range, interface (I²C / SPI / 4–20 mA / SENT), process connection and cable pigtail per CDU / compressor integration. No oil-fill keeps it glycol- and refrigerant-safe.

All Sensors

Dual-die CoBeam2™ transducer

Applications

VAV flow control (fan and duct ΔP)
CRAC/CRAH low-range duct ΔP where a dual-die span of ±2 inH₂O is needed

Type: Dual-die cross-coupled low-ΔP
Range: 0–5 inH₂O / 0–2 inH₂O
Supply: 4.75–5.25 Vdc (typ 5 V)

All Sensors

Leadless dual-die digital ΔP

Applications

Server-chassis airflow ΔP for fan-curve control and blocked-intake alarms (ducted whitespace)

Type: Leadless dual-die CoBeam2™
Range: ±0.5 to ±60 inH₂O (G/D)
Output: Digital I²C & SPI

All Sensors

Ultra-low-pressure CoBeam2™

Applications

CRAC/CRAH whitespace ultra-low-pressure monitoring on PSUs and liquid-assisted air handlers

Type: Ultra-low-ΔP CoBeam2™
Range: 0.5–30 inH₂O · 1–150 psi
Output: I²C · SPI · analog

NovaSensor

NovaSensor FMA Series — NPA piezoresistive

Applications

CRAC/CRAH filter-clog monitoring with automotive-grade connector
Air-handler ΔP diagnostics
Generator intake-filter monitoring

Type: Piezoresistive NPA filter ΔP
Ranges: 5" H₂O – 5 PSI (gauge)
Output: 0.5–4.5 V ratiometric

NovaSensor

Miniature SO-8 SMT barometric

Applications

Whitespace pressurization control (positive / negative) at board level
Barometric compensation for airflow and RH sensors

Range: 100 – 700 kPa absolute
Tech: Silicon Fusion Bonded
Package: SO-8 SMT

Amphenol Sensors

High-pressure P+T with stainless-steel diaphragm

Applications

High-pressure refrigerant lines (single penetration, universal-media diaphragm)

Range: 10 – 350 bar (145 – 5000 psi)
Diaphragm: Stainless steel — universal media
Feature: P + T in one sensor body

Thermometrics

Waterproof IP68 overmolded NTC

Applications

HVAC duct-insertion temperature (waterproof overmold)

Protection: IP68 waterproof overmold
Range: −50 to +105 °C (+125 °C ≤ 6 h)
Thermistor: 10 kΩ NTC

Custom variant

Longer probe lengths (6″ / 12″) for duct insertion; threaded SS housing for pipe immersion; networked multi-probe cable (up to 8 probes / run) for rack-row monitoring.

Thermometrics

Duct-mount averaging NTC

Applications

Air-handler return / supply averaging across wide ducts (single sensor, multi-point average)

Type: Duct-mount averaging NTC
Resistance: 10 kΩ ±1% at 25 °C
Operating: −40 to +85 °C

Thermometrics

Acid/moisture-resistant coated chip

Applications

Harsh-environment ambient temperature for outdoor CRAC condensers and humid-coast deployments (epoxy-coated, acid-resistant lead)

Operating: −40 °C to +190 °C
Compliance: AEC-Q200 Rev D · RoHS · REACH
Features: Shock-resistant · silver-migration resistant

Telaire

Duct- and wall-mount RH + T transmitter

Applications

CRAC/CRAH white-space ambient T+RH integration — field-replaceable capacitive tip keeps the transmitter in place during recalibration

RH accuracy: ±2%, ±3% or ±5% RH
Output: 4–20 mA, 0–5 V or 0–10 V
Drift: <1% RH / year typ.

Telaire

Dew-point / enthalpy / wet-bulb

Applications

Outdoor / rooftop CRAC and economizer ambient where dew-point and wet-bulb matter for free-cooling control
Extended-range RH/T ambient monitoring above standard 0–100% / 100% condensing limits

Operating env: −40 to +60 °C, 0–99% RH
Output: 4–20 mA, 0–5 V or 0–10 V
Measurands: Dew Pt · Enthalpy · Wet Bulb · Dry Bulb

Telaire

OEM board-level T+RH

Applications

OEM-integrated T+RH inside CRAC/CRAH, CDU, PDU and rack-level environmental monitors (I²C or PDM)

RH accuracy: ±2.0% RH (20–80%)
Temp accuracy: ±0.5 °C (14-bit)
Output: I²C or PDM

Telaire

Rugged ambient, ChipCap 2 core

Applications

BESS battery-room ambient T+RH with Modbus daisy-chain to the BMS

RH accuracy: ±2.0% RH (20–80%)
Output: RS-485 Modbus
Protection: IP67

Telaire

OEM NDIR module with ABC Logic™

Applications

DCV for CRAC/CRAH without periodic manual calibration (ABC Logic self-calibrates from fresh-air reference cycles)

Range: 0–5000 ppm CO₂
Accuracy: ±30 ppm ±3% of reading
Output: I²C · UART Modbus · PWM

Telaire

Wall-mount CO₂ transmitter

Applications

Wall-mount DCV (demand-controlled ventilation) with analog output direct to BMS

Range: 0–2000 ppm CO₂
Accuracy: ±30 ppm or ±3% of reading
Output: 0–5/0–10 V or 4–20 mA

Telaire

CO₂ / CO₂+RH / CO₂+RH+T

Applications

DCV CO₂ monitoring and control on a BACnet backbone; optional T+RH on the same device (rewire-free replace)

CO₂ accuracy: ±30 ppm or ±3% of rdg
RH accuracy (opt.): ±2.5% RH (20–80%)
Supply: 18–30 VAC or 10.8–42 VDC

Amphenol

Epoxy-hardened waterproof transmitter

Applications

Ambient RH where epoxy-hardened waterproof construction is required (washdown / dusty halls)

RH accuracy: ±2% RH (30–95%) @ 25 °C
Feature: Withstands 100% saturation
Output: 4–20 mA, 0–5 V or 0–10 V

Amphenol

Capacitive RH + T with integrated ASIC

Applications

OEM SMT board-mount T+RH inside CRAC/CRAH and CDU controller PCBs (sub-0.5% drift/yr; condensation alarm output)

Type: Capacitive RH+T, LCC SMD
RH accuracy: ±2.0% RH (20–80%)
Temp accuracy: ±0.3 °C

Telaire

HS20 / HS12SP / HS30P family

Applications

HVAC return-air RH
CRAC humidity control — use HS30P where sub-zero start-up is possible

Type: Bulk-resistance RH (thin-film polymer)
Variants: HS20 / HS12SP / HS30P
Drive: Low-V AC, 50 Hz – 1 kHz

Telaire

MEMS thermal air-velocity sensor

Applications

CRAC/CRAH return-air velocity
VAV damper feedback closed-loop control
Filter-health trending via pre/post-filter Δv

Ranges: 0–7 m/s or 0–15 m/s
Interface: I²C 12-bit
Response: 125 ms typ

Telaire

MEMS thermal-conductivity A2L sensor

Applications

Early A2L (R454B) refrigerant-leak detection on CRAC compressors and refrigerant lines

Targets: R454B · R32
Range: 0–100 %LFL (0.1 %LFL res.)
Comm: RS-485 Modbus RTU

Thermometrics

RLDS-B / RLDS-P / RLDS-E controllers

Applications

CRAC condensate-pan overflow rings

Type: Rope-style conductive leak detection
Family: RLDS-B / RLDS-P / RLDS-E controllers
Cable support: Up to 1,500 m (Elite positioning)

Wilcoxon

High-MTBF industrial accelerometer

Applications

CRAC-compressor bearing and scroll vibration monitoring (API 670)

Sensitivity: 100 mV/g ±5%
Response: 0.5 – 14,000 Hz
Max temp: 120 °C
Compliance: API 670; CSA / ATEX / IECEx variants

IMI

Echo® sensor + EchoPlus® wireless

Applications

Wireless predictive-maintenance on hard-to-wire rotating equipment — CRAC compressors, CDU pumps, genset bearings

System: Wireless sensor + EchoPlus® JB + Receiver
Measures: Peak/RMS vel, accel, crest factor
Integration: Modbus®

All Sensors

Stainless-steel piezoresistive — high media compatibility

Applications

High-pressure media-compatible monitoring on compressor / refrigerant lines / chiller pressure (SS 316/316L wetted)

Tech: Piezoresistive (SS 316/316L wetted)
Range: 200 mbar – 35 bar (A / G / V)
Output: mV (1.5 mA constant-current)

All Sensors

Stainless-steel piezoresistive — analog + I²C

Applications

Digital + analog dual-output pressure monitoring on compressor / refrigerant / chiller systems (I²C to BMS controllers, ratiometric to legacy analog inputs)

Tech: Piezoresistive + ASIC (SS 316/316L)
Range: 200 mbar – 35 bar / 3 – 500 psi
Output: 0.5–4.5 V ratiometric + I²C

Telaire

SIP through-hole T+RH module

Applications

Field-installable T+RH on retrofit CRAC/CRAH controllers where the daughterboard uses through-hole only

RH accuracy: ±2.0% RH (20–80%)
Output: I²C or PDM
Package: 4-pin SIP through-hole

SGX Sensortech

NDIR R-290 (propane) refrigerant leak detector

Applications

A2L / R-290 refrigerant-leak detection in CRAC/CRAH and rooftop air handlers transitioning to natural refrigerants (UL 60335-2-40 compliant)

Target: R-290 (propane) refrigerant
Range: 0 – 100% LEL (0 – 21000 ppm)
Tech: NDIR — selective, no cross-sensitivity

i2s

Compact media-isolated, piezoresistive SS or MEMS technology

Applications

CRAC compressor suction / discharge pressure (refrigerant-rated, A2L-compatible)

Ranges: 0–10 bar / 0–40 bar (a and g)
Total error band: ±1.0% FSS
Output: 0.5–4.5 V ratiometric · 4–20 mA

The takeaway

From MEMS on the PCB to transducers on the pipe.

Purpose-mapped across CRAC/CRAH, CDU & immersion, PDU/UPS, rack infrastructure, server boards, standby generators and BESS — so the same supplier covers the entire data-center thermal, power and safety envelope.

Custom Variant options are available on many products: extended ranges, alternate housings, split-core retrofits, and certified industrial housings packaged around Amphenol sensing elements.

Disclaimer: All product specifications and descriptions are subject to change without notice. The information on this page is for general guidance only and does not constitute a warranty of any kind. To confirm current specifications and product suitability for your application, please contact Amphenol Sensors directly.