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Data center sensing

Data Center Power Infrastructure Sensors

Sensors for data center PDU, UPS, switchgear and transformers, including temperature, pressure, humidity, gas, leak and current sensing.

Why it matters

Every connection is a potential hot spot.

Higher rack densities push more current through PDUs, busways and switchgear. Loose lugs and overloaded busbars heat up long before they fail, and condensation inside cabinets adds risk. Continuous thermal and current monitoring turns these into maintenance tickets instead of outages.

What we monitor

  • Busbar, lug and terminal temperature — contact and non-contact IR
  • Three-phase and DC current
  • Cabinet temperature and humidity
  • Inrush protection for PSUs, PDUs and UPS

What we measure

Sensor coverage for power infrastructure

Explore sensor technologies mapped to PDU · UPS · Switchgear · Transformers · Busway · ATS/STS. Product application notes below identify where each sensor fits within this data center sub-system.

Available technologies

Sensors for Power Infrastructure

17 products · 6 categories

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

NovaSensor

NovaSensor NPI/IPT Harsh-Media Family

Applications

  • Hydraulic- and pneumatic-actuator line pressure in switchgear
Range
1 – 15,000 psi
Output
4–20 mA, 0–5/10 V, I²C, SPI
Accuracy
±0.25% FS
NovaSensor

SMT MEMS + ASIC in miniature housing

Applications

  • PDU / UPS board-mount pressure on auxiliary cooling fans and bypass-duct ΔP feedback (SMT tape-and-reel into controller PCBs)
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.

All Sensors

Stainless-steel piezoresistive — high media compatibility

Applications

  • Industrial-controls / pneumatics use cases adjacent to PDU / UPS auxiliary cooling and compressor lines
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

  • PDU / UPS auxiliary-cooling pressure on compressor and pneumatic actuator lines (industrial-controls role)
Tech
Piezoresistive + ASIC (SS 316/316L)
Range
200 mbar – 35 bar / 3 – 500 psi
Output
0.5–4.5 V ratiometric + I²C
Thermometrics

Waterproof IP68 overmolded NTC

Applications

  • PDU-cabinet ambient temperature (flange-mount, cable-gland)
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

Screw-fixed surface NTC

Applications

  • PDU / UPS busbar-stud temperature for hot-spot detection
  • Lug and terminal-connection temperature trending
Operating
−40 to +125 °C
R @ 25 °C
5K / 10K / 20K / 50K / 100K Ω
Form factor
Ring-terminal screw-mount
Thermometrics

Surface-stick NTC (flat / pipe / cable)

Applications

  • PDU / UPS cable and lug skin temperature
  • Transformer-skin temperature trending
  • Busway surface-temperature monitoring
Operating
−30 to +70 °C
R @ 25 °C
9983 Ω (typ)
Mounting
Pressure-sensitive adhesive
Thermometrics

Non-contact IR temp modules

Applications

  • Non-contact busbar / hot-spot temperature scanning in switchgear and PDUs
Type
Non-contact IR thermopile
Output
Digital I²C (24-bit ZTPD)
Supply
4.75–5.25 V; ~4.5 mA
Telaire

OEM board-level T+RH

Applications

  • PDU / switchgear-cabinet T+RH (board-mount module with shielded JST cable; ±2% RH, ±0.5 °C)
RH accuracy
±2.0% RH (20–80%)
Temp accuracy
±0.5 °C (14-bit)
Output
I²C or PDM
Telaire

OEM NDIR module with ABC Logic™

Applications

  • PDU / UPS room-level CO₂ monitoring for occupant-aware ventilation in switchroom / electrical-room atmospheres (ABC Logic; no manual calibration)
Range
0–5000 ppm CO₂
Accuracy
±30 ppm ±3% of reading
Output
I²C · UART Modbus · PWM
Telaire

Capacitive RH + T with integrated ASIC

Applications

  • PDU / UPS controller-board T+RH for cabinet condensation prevention
  • Switchroom environmental monitors integrated at board level
Type
Capacitive RH+T, LCC SMD
RH accuracy
±2.0% RH (20–80%)
Temp accuracy
±0.3 °C
SGX Sensortech

Functional-safety H₂ leak sensor

Applications

  • Safety-rated H₂ leak detection in BESS and Li-ion UPS where functional-safety (ISO 26262) compliance is required by the integrator
Safety
ISO 26262 SEooC
Range
0 – 4 vol.% H₂
Response
<1 s (100 ms CAN frame)
Thermometrics

LET-Basic / LET-Plus / LET-Elite alarm modules with sense cable

Applications

  • PDU/UPS perimeter leak containment
Type
Rope-style sense cable + alarm module
Cable length
Up to 500 m (Basic, Plus) · up to 1,500 m locating (Elite)
Interface
RS485 Modbus RTU · BACnet IP / Modbus TCP support · relay outputs
Piher

3-phase busbar current sensor

Applications

  • 3-phase busbar current in PDUs, RPPs and static switches (press-fit on HybridPack busbar geometry)
  • Generator output-breaker current sensing
Range
Up to ±1,200 A (3-phase)
Response time
3 μs max
Output
3× ratiometric 0.5 – 4.5 V

Custom variant

3-phase press-fit housing matches Infineon HybridPack busbar geometry; DC-capable Hall core for BESS and rectifier sections; customer-specified range and output via ASIC trim.

Thermometrics

A-2130 design-in kit (Type YQ / PTF)

Applications

  • PDU / UPS inrush-current protection on transformer and capacitor banks
  • In-line circuit-breaker / fuse protection on sensitive control boards
Type PTF
Bare ceramic PTC disc — 18–240 V
Type YQ
Green-silicone-coated PTC
Companion
A-2130 NTC inrush-limiter kit
Thermometrics

NTC discs for inrush current limiting

Applications

  • Soft-start of switching power supplies — server PSU / PDU / UPS pre-charge inrush suppression on filter capacitors
  • Motor-drive front-end soft-start (CDU pump and fan drives) and general PCB-mount inrush suppression where a small passive component is preferred over an active relay-based pre-charge
Family
CL-11 → CL-210 (~21 SKUs)
R₀ @ 25 °C
0.5 Ω – 120 Ω (±25%)
Max steady current
1.1 – 16 A RMS

Custom variant

Complementary to the PTC current-limiter family — both ship from the same St. Marys, PA facility and share the A-2130 multi-product design-in kit. PTC starts low-resistance and rises (over-current latch protection); NTC starts high cold-resistance and drops as it heats (soft-start of large capacitive loads). Pair the two for full inrush + over-current coverage in DC-bus pre-charge, server PSUs, UPS, BESS PCS and motor-drive front-ends.

Telaire

SIP through-hole T+RH module

Applications

  • PDU / switchgear control-board T+RH in legacy through-hole designs
RH accuracy
±2.0% RH (20–80%)
Output
I²C or PDM
Package
4-pin SIP through-hole