RTD Helmet-mounted temperature transmitter TMT187A
 
Application areas
 
Head mounted temperature transmitter with iHART- protocol for converting various input signals into a 
scalable 4 to 20 mA analogue output signal
 
	
		
		
	
	
		
			| Power supply | 
		
		
			| Supply voltage | 
			7.5 to 45 VDC , polarity protected | 
		
		
			| Output | 
		
		
			| Output signal | 
			4 to 20 mA | 
		
		
			| Signal on alarm | 
			Underranging Linear drop to 3.8 mA | 
		
		
			| Overranging linear rise to 20.8 mA | 
		
		
			| Sensor break; | 
		
		
			| sensor short-circuit(not for thermocouples TC) :3.6mA or 22 mA | 
		
		
			| Load | 
			Max.(Vpower supply-7.5 V)/0.022 A | 
		
		
			| Linearisation/transmission behaviour | 
			Temperature linear | 
		
		
			| Installation conditions | 
			  | 
		
		
			| Installation instructions | 
			Installation angle:no limit | 
		
		
			| Installation area:connection head according to DIN 43 729 Form B; | 
		
		
			| TAF 10 | 
		
	
 
 
	
		
		
		
		
	
	
		
			| Performance characteristics | 
		
		
			| Response time | 
			1 s | 
		
		
			| Reference operating conditions | 
			Calibrationtemperature: 23℃(73.4F)5Ko | 
		
		
			| Long-term stability | 
			<0.05%/year | 
		
		
			| Switch on delay | 
			<5S | 
		
		
			| In | 
			Negligible | 
		
		
			| Load in | 
			Negligible | 
		
		
			| Maximum measured error | 
			Input | 
			Type | 
			Measurement accuracy | 
		
		
			| RTD | 
			Pt100 | 
			0.2K or 0.08% | 
		
		
			| Pt1000 | 
			0.3K or 0.12% | 
		
		
			| Environment conditions | 
		
		
			| Ambient temperature limits | 
			-40℃ to 85℃(-40℉ to 185℉) | 
		
		
			| Storage temperature | 
			-50℃ to 100℃(-58℉ to 212℉) | 
		
		
			| Condensation | 
			Allowable | 
		
		
			| Degree of protection | 
			IP00,IP66(installed) | 
		
		
			| Shock and vibration resistance | 
			4g/2 to 150 Hz as per IEC 60 068-26 | 
		
		
			| Electromagnetic | 
			Interference immunity and interference emission according | 
		
		
			| compatibility(EMC) | 
			to GB/T17626.2-1998, compliance with IEC 61000-4-3:1995 | 
		
		
			| Others | 
		
		
			| Dimensions | 
			Dia. 44 mmX24 mm | 
		
		
			| Weight | 
			Approx. 34g | 
		
		
			| Material | 
			Housing: PC | 
		
		
			| Potting: epoxy |