N32x-RHT Family of Humidity and Temperature Controllers

• Two or Three Relay Outputs for Control or Alarm
• On/Off Control - Reverse or Direct Control Action
• 3½-digit LED Display
• Sensor Offset Adjustment
• Adjustable Hysteresis
• Program Retention During Power Failures
• Optional RS485 Interface With Modbus RTU Protocol

The N32xRHT is a family of relative humidity and temperature electronic controllers(humidstats) The N322RHT has two relay outputs and the N323RHT has three relay outputs.  The outputs may be independently configured for either on/off control or as an alarm output. The control outputs can operate with either reverse control action (heating or humidification) or direct control action (cooling or dehumidification). The alarm outputs may be either high alarm, low alarm or set to trigger inside or outside a temperature range.  The third output of the NR323RHT may  be set as an independent timer.

The N32xRHT works with an external humidity/temperature probe. The sensor of the probe is protected by a polyamide capsule and is available with either a three or six meter PVC insulated cable.

The  N32xRH display alternately shows the temperature and humidity. Time between those indications is configurable by the user.

Depending on the model selected, the  controller may be powered by either 100 to 240 Vac or 12 to 24 Vac/dc.  It is also available with optional RS485 communications with Modbus protocol.

PART NUMBERS	DESCRIPTION
N322 Controllers with 2 Relay Outputs
N322-RHT	Temperature/humidity controller (humidstat) with 2 relay outputs, 100 to 240 Vac/dc power (temperature/humidity sensor sold separately)
N322-RHT-24V	Temperature/humidity controller (humidstat) with 2 relay outputs, 12 to 30 Vdc power (temperature/humidity sensor sold separately)
N322-RHT-485	Temperature/humidity controller (humidstat) with 2 relay outputs, RS485 communications, 100 to 240 Vac/dc power (temperature/humidity sensor sold separately)
N322-RHT-485-24V	Temperature/humidity controller with 2 relay outputs, RS485 communications, 12 to 30 Vdc power (temperature/humidity sensor sold separately)
N323 Controllers with 3 Relay Outputs
N323-RHT	Temperature/humidity controller with 3 relay outputs, 100 to 240 Vac/dc power (temperature/humidity sensor sold separately)
N323-RHT-24V	Temperature/humidity controller with 3 relay outputs, 12 to 30 Vdc power (temperature/humidity sensor sold separately)
N323-RHT-485	Temperature/humidity controller with 3 relay outputs, RS485 communications, 100 to 240 Vac/dc power (temperature/humidity sensor sold separately)
N323-RHT-485-24V	Temperature/humidity controller with 3 relay outputs, RS485 communications, 12 to 30 Vdc power (temperature/humidity sensor sold separately)

SPECIFICATIONS

Relative Humidity Input
  Range: 0 and 100 %RH (see figure below)
  Accuracy: (see figure below)
  Repeatability: ±1% RH
  Resolution:  1%
  Hysteresis: ±1% RH
  Linearity error: < 1% RH
  Stability: < 1% RH/year
  Response time: Approx. 8s to reach 63% of input change(Valid at 25°C and 1 m/s airflow)

Temperature Input
  Accuracy: (see figure below)
  Repeatability: ±0.1°C
  Range: -20 and 100 °C (see figure below)
  Resolution: 0.1° from –19.9 to 119.9°
  Response Time: Up to 30 seconds in slow moving air


Output 1: Relay SPDT; 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Res.)
Output 2: Relay: 3 A / 250 Vac, SPST-NA
Output 3 (N323RHT only): Relay: 3A / 250 Vac, SPST-NA
Power Supply Voltage:  100 to 240 Vac/dc ±10% 50-60 Hz or 12 to 30 Vdc/Vac (model dependent)

Power Consumption: 5VA
Dimensions: 75x33x75mm (WxHxD)
Weight: 100g
Panel Cut-out: 70 x 29mm
Electronic Unit Operating Environment: 0 to 40°C (32 to 104°F) / 20 to 85% RH
Sensor Operating Environment: -20 to 100°C (-4 to 212°F) / 0 to 100% RH
Case: Polycarbonate UL94 V-2
Protection: Housing IP42, front panel IP65, sensors capsule IP40 (sold separately)
Certifications: CE and UL