WGTH-310N Nuclear Industry K3 Level Harsh Environment (Red Zone) Temperature and Humidity Transmitter-Industrial Process Control-Dew Point-Products-GemCreate Electronics Technology (Shanghai) Co., LTD

WGTH-310N Nuclear Industry K3 Level Harsh Environment (Red Zone) Temperature and Humidity Transmitter

Nuclear power stations or nuclear power units use atomic nuclear fission reaction in nuclear reactor to produce thermal energy, heating water produces the superheated steam, which spins the turbine to make thermal energy convert into mechanical energy, and then the turbine spins the generator to make mechanical energy convert into electric energy.

In this process, the online monitoring of steam leakage at the welded joints of high-temperature and high-pressure steam pipes on the nuclear island is the important guarantee to ensure the safety of the operation of the nuclear power station, and the temperature and humidity sensor is the most direct and ideal monitoring program, which has significant advantages such as fast response, high precision, convenient installation and easy maintenance.

WGTH-310N Nuclear Industry K3 Level Harsh Environment (Red Zone) Temperature and Humidity Transmitter is specially developed for the applications in this field, its probe up to 100m split cable can be installed in the red zone of harsh irradiation environment, and the transmitter can be installed in the yellow zone of irradiation environment. In addition, this product has passed the nuclear grade type tests including irradiation, seismic, environment tests, etc., which can meet the vast majority of nuclear power stations and temperature and humidity related monitoring needs.

Technical Features

Output signal: two ways 4 ~ 20mA, RS485, relay switching quantity

Output parameter: temperature, relative humidity, dew point, frost point, wet bulb temperature, enthalpy value, partial pressure of water vapor, mixed ratio, absolute humidity, moisture in oil

Shell material: 316 stainless steel

Structural feature: the upper and lower shell use detachable hinge design

Type test: nuclear grade type test

Configuration software: CONG-01 visual upper computer configuration software

Self-checking function: probe heating self-checking

Probe pressure resistance: 20Bar, immersible

Probe structure: push-pull self-locking aviation plug

Irradiation dose:

transmitter 0.35kGy cumulative gamma irradiation dose, yellow zone

transmitter and cable 42kGy cumulative γ irradiation dose, red zone

Probe cable: up to 100m in length

Measurement technology: small capacitance signal processing under the background of long cable and strong noise

Typical Applications

High temperature steam leakage monitoring in nuclear island area of nuclear power stations

Nuclear waste dew point parameter monitoring

High-temperature steam leakage monitoring of nuclear power units

Temperature and humidity environmental monitoring of nuclear-powered ships

Technical Data

Input and output

Operating voltage	24V DC ±20% or 220V AC	Current output	4 ~ 20mA RL < 500 Ohm
Power consumption	General mode: 70mA		Channel precision: ±0.2%FS
	Self-check mode: 80mA	Data output	RS485 (Modbus RTU)
Switching quantity parameter	Contact resistance ≤ 100mΩ( 1A 6VDC)	Switching quantity output	Electric shock load: 5A 250VAC or 5A 30VDC
	Mechanical durability: 1×10⁷times		Maximum switching voltage: 30VDC/277VAC
	Electrical durability: 1×10⁵times (room temperature 1.5s on-off)		Maximum switching current: 8A

Measurement Parameter

Relative humidity		Temperature
Measurement range	0 ~ 100%RH	Measurement range	−40 … 190°C
Measurement precision	±2.5%RH (0 … 90%RH & 20℃)	Measurement precision	±0.2°C (20℃)
Calibration error	±0.5%RH (0 … 40%RH)	Calibration error	±0.1°C
	±0.8%RH (40 … 95%RH)
τ₆₃ response time	30s (probe fitted with stainless steel sintered filter)	- -	- -
Humidity sensitive element	High molecular polymer humidity-sensitive capacitor	Temperature sensitive element	PT1000 (Grade 1/3B, DIN EN 60751)
Humidity measurement drift	＜1%RH/year (neutral clean environment)	Temperature measurement drift	＜0.05℃/year (neutral clean environment)

The above precisions are comprehensive precisions, including repeatability, linearity and hysteresis of the measurement, and can be traced to the CNAS standard.

Mechanical Specification

Wiring connection	The maximum cable diameter of the terminal is 1.5mm²	Cable connector	M161.5 or M201.5 gland connector
Shell material	316 stainless steel	Connector diameter	Φ4...8 or Φ6...12
Probe protection	Stainless steel sintering, stainless steel grille, stainless steel pore, etc.	Probe cable diameter	Φ6 (irradiation cable); Φ4 (high-temperature cable)
Protection grade	IP65

Operating Environment

Operating temperature

Transmitter: -40 ... 80℃; Probe: -40 ... 190℃

Storage temperature

-20 ... 60℃

Type Test

Environment test	Standard	Reference test	Standard
High temperature test	GB/T 2423.2-2008	Visual inspection	RCC-E MC2000
Low temperature test	GB/T 2423.1-2008	Front-end equipment performance test	Response time, tolerance acceptance
Temperature change test	GB/T 2423.22-2012	Electrical test	RCC-E MC3000
Alternating heat and humidity test	GB/T 2423.4-2008	Electromagnetic compatibility test	Standard
Mechanical vibration test	GB/T 2423.10-2008		IEC 61000 (GB/T 17626)
Long run test	EJ/T 1197-2007		IEC 62003
Seismic test	HAF-J0053 / GB13625
Irradiation test	Transmitter: 0.35kGy cumulative γ irradiation dose, yellow zone
	Probe cable: 42kGy cumulative γ irradiation dose, red zone

Data download:

WGTH-310N Nuclear Industry K3 Level Harsh Environment (Red Zone) Temperature and Humidity Transmitter Product Manual