Setra Systems

SRH300 Humidity and Temperature Transmitter

Accurately measures RH and temperature and calculates dew point, absolute humidity and mixing ratio

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SRH300 Humidity and Temperature Transmitter 05293

The Setra Model SRH300 meets the highest requirements in demanding climate control applications. In addition to the accurate measurement of relative humidity (RH) and temperature (T), the Model SRH300 calculates various RH related parameters such as dew point, absolute humidity and mixing ratio. All measured and calculated values are available on the BACnet MS/TP or Modbus RTU interface. Two measured values are available on the analog voltage or current outputs, while up to three values can be shown simultaneously on the optional display.

Excellent performance of the Model SRH300 in aggressive or polluted environments is ensured by encapsulating the measurement electronics inside the sensing probe.

The Model SRH300 is available in wall or duct mounted versions as well as with remote probe. The IP65/NEMA 4 enclosure minimizes installation costs and provides outstanding protection against contamination and condensation.

• Excellent long-term stability
• BACnet MS/TP and Modbus RTU compatible
• Sensor coating protects sensing element and extends performance
• Display with selectable layout
• Wall, duct, and remote probe options available

Power Supply4-20 mA, 2-wire: 10 V + RL x 20 mA < V+ < 30 VDC
0-20 mA, 3-wire: 15-30 VDC or 24 VAC ±20%
0-5 V, 0-10 V, RS485: 15-30 VDC or 24 VAC ±20
Current Consumption at 24 VVoltage output: DC supply max: 12 mA; w/display max: 23 mA, AC supply max: 34 mArms; / display max: 49 mArms

Current output (2-wire): DC supply max: 40 mA; w/display max: 40 mA
Current output (3-wire): DC supply typ: 33 mA; w/display max: 44 mA, AC supply typ: 65 mArms; / display max: 84 mArms

Digital interface: DC supply typ: 5 mA; w/display max: 20 mA, AC supply typ: 15 mArms; / display max: 35 mArms

Display1, 2 or 3 lines, user configurable
ConnectionScrew terminals, max. wire 16 AWG
Housing MaterialHousing: Polycarbonate, UL94V-0
Faceplate: Polycarbonate UL94HB
Protection ClassIP65/ NEMA 4
Gland FittingPG9
Remote Probe CablePVC, Ø 4.3mm, 4 x 23 AWG;
Length: 1.5 or 3 m (4.9 or 9.8 ft.)
Electromagnetic Compatibility EN61326-1 EN61326-2-3 Industrial Environment
Temperature RangesOperating: -4 to 122°F (-20 to 50°C)
Storage: -4 to 140°F (-20 to 60°C)
Relative Humidity (RH) SensorHCT01-0
Working Range (RH)0-100% RH
Accuracy including non-linearity, hysteresis, and repeatability at 5 to 105°F ; 50% RH±1.45% RH
Remote probe accuracy including non-linearity, hysteresis, and repeatability at 5 to 70°F ; 50% RH±2.5% RH
Analog Output0-5 V, 0-10 V: -1 mA < IL < 1 mA
4-20 mA (2-wire): RL ≤ 500 Ω
0-20 mA (3-wire): RL ≤ 500 Ω
Digital OutputRS485 (BACnet MS/TP or Modbus RTU), max. 32 SRH300 units on one bus

• HVAC
• Cleanrooms
• Operating rooms
• Patient isolation rooms
• Pharmaceutical labs
• Industrial manufacturing
• Compounding pharmacies

  • Thumbnail of document Model SRH300 Data Sheet 8386
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    Model SRH300 Data Sheet 8386

    Download

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