JD Instruments, Inc.

IR-BHT Series - Radiation Thermometers

The IR-BHT series are the compact radiation thermometers for quick measurement of temperature without contact to objects. The card sized detector with built-in functions including converting function and alarming function has analog output and alarm output.

The thermometers can easily installed in narrow places, production lines, small equipment, and other places, and utilized extensively as a temperature sensor or a temperature switch.

Features

Compact (card size) and lightweight (220g)
24VDC power voltage
4 to 20mADC output
Gain () and alarm setting

Models

Thermometer with conversion capability

Types	Models	Measuring distance and measuring diameter
General type	IR-BHT11	40/500mm
General type	lR-BHT21	5/80mm
For small diameter with long distance	lR-BHTS1	20/500mm

Indicator with power supply/Converter

Types	Models
Indicator with power supply	IR-GBHA1
Indicator with power supply	IR-GC1
Converter with reflection correction	IR-GBG2

Specifications

Detector

Models	IR-BHT11	lR-BHT21	IR-BHTS1
Measuring system	Wide band radiation thermometer
Temperature range	0 to 300
Detector	Thermopile
Spectral range	8 to 13m
Target sizes	40/500mm	5/80mm	40/1000mm
Accuracy rating	Under 200: 3 Over 200: 1.5% of reading
Resolution	0.2
Repeatability	0.2
Response time	0.1 second (95% response)			0.2 second (95% response)
Optical system	Ge lens
Emissivity	0.2 to 1.8 (Semi-fixed control knob)
Analog output	4 to 20mADC (Load resistance: 280)
Alarm	Settings by adjustable resistor on the rear panel
Alarm output	Open collector (Voltage: lower than 30VDC, Current: lower than 100mADC)
Operating temperature	0 to 50
Power supply	12 to 24VDC
Current consumption	Lower than 60mADC
Connecting cable	2m (Up to 200m, For longer than 2m, an extension cable is used.)
Casing material	Diecast aluminum
Water protection	JIS C0920 Drip water protection II type IP-X2
Mounting	Fixed by two M4 screws on a tripod
Weight	About 220g

Indicator with power supply/Converter with reflection correction

		Indicator with power supply		Converter with reflection correction
Model		IR-GBHA1	IR-GC1	IR-GBG2
Input signal		4 to 20mADC		4 to 20mADC Rear radiation source temperature Pt100 or 4 to 20mADC
Function	Power supply for detector	24VDC 80mADC	24VDC 100mADC	24VDC 60mADC
	Digital display	Available	Available	Available
	Insulation output 4 to 20mADC	Available	Available	Available
	Alarm function	Not available	Available (High speed alarm)	Available
	Modulation function	Not available	Available	Available
	Reflection ratio correction function	Not available	Not available	Available
	Sensor correction	Not available	Not available	Available
Operating temperature range		0 to 50		-10 to 50
Operating humidity ranges		Lower than 85%RH (no condensation)	Lower than 90%RH (no condensation)	20 to 90%RH (no condensation)
Power supply		100VAC, 50/60Hz	85 to 264VAC, 50/60Hz	85 to 264VAC, 50/60Hz
Power consumption		Maximum 7VA	Maximum 20VA	Maximum 15VA
Weight		About 500g	About 400g	About 600g

Note: Please use the converter with reflection correction if an object is influenced by rear radiation source.