Alpha Moisture Systems DS1200-AMT Installatie-, inbedrijfstellings- en gebruikshandleiding - Pagina 14
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10 Faults/Errors
• If the sensor is short-circuited, the transmitter will produce a constant 20.75mA output.
• If the sensor is open-circuited, the transmitter will produce a constant 20.50mA output.
• If the hardware develops a fault, the transmitter will produce 21.0mA for 5 seconds after switch
on and then continue to give an output.
11 Specifications
11.1 DS1200 Specifications:
• Temperature operating range = -20ºC to +60ºC
• Power supply = 20 – 300 VDC, or 22 to 253 VAC 50 – 60 Hz
• 3.2W internal power consumption
• 3.5W maximum power consumption
• Isolation voltage test / operation = 2.3KVAC / 250 VAC
• Signal to noise ratio = Min 60dB (0-100kHz)
• Display Response time (0-90%, 100 to 10%) = 0.4s.
• Wire size, pin 45 & 46 (max) = 1 x 1.5mm
• Wire size, others (max) = 1 x 2.5mm
• Relative Humidity = < 95% RH
• Dimensions (HxWxD) = 48 x 96 x 120mm
• Cut out dimensions = 44.5 x 91.5mm
• Ingress Protection = (Front panel) IP65
• Weight = 230g
• Input
o From model AMT
o Error detection = Cable loop break
• Display
o Display Readout = AMT range
o Scrolled error display
• Current Output
Programmable signal ranges = 0...20 or 4...20mADC (Factory set)
o
o Load (max) 20mA / 800Ω / 16VDC
o Load stability ≤ 0.01 % of span / 100 Ω
• Relay
o Relay function = setpoint
o Hysterisis 1% of range
o Max voltage = 250 VRMS
o Max Current = 2A /AC
o Max AC power = 500VA
o Max current at 24 VDC = 1A
2
stranded wire
2
stranded wire
Page 11