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Pyromation Series 440 Programmable RTD Temperature Transmitter

Programmable RTD Temperature Transmitter
Series 440

The Series 440 programmable RTD temperature transmitter is a two-wire transmitter with an analog output. It has measurement input for Pt100 resistance thermometers (RTD) in 2 or 3 wire connection. Setting up of the transmitter is done using the 440-CABLE. These small units can be mounted in Pyromation heads or they can be used for surface mounting by using a 35 mm DIN rail mounting clip.

• Universally PC programmable for Pt100 signals
• 2 wire technology, (4 to 20) mA analog output
• High accuracy in total ambient temperature range
• Fault signal on sensor break or short circuit
• RFI/EMI Protected, marked
• UL Recognized Component
• General Purpose and non-incendive for use in hazardous locations
• Online configuration during measurement using SETUP connector
• Output simulation

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Table 1Table 2
XX
Table 1DESCRIPTION
2RTD (2-wire)
3RTD (3-wire)
85100 ohm platinum (α = 0.00385⁻¹)
UUpscale Burnout ≥ 21.0 mA
DDownscale Burnout ≤ 3.6 mA
CCelsius
FFahrenheit
Table 2Range
S(50-300) S (lower limit – upper limit)
Resistance Thermometer Input (RTD)
TYPE: MEASUREMENT RANGE:
Pt100 (α = 0.003 85 oC-1)

(-200 to 650) °C, [-328 to 1202] °F, MINIMUM RANGE: 10 °C [18 °F]

Connection Type 2 or 3 wire connection cable resistance compensation possible in the 2 wire system (0 to 20) Ω
Sensor cable resistance maximum 11 Ω per cable
Sensor current ≤ 0.6 mA
Output (Analog):
Output signal (4 to 20) mA or (20 to 4) mA
Transmission as Temperature linear
Maximum load (Vpower supply - 10 V) / 0.023 A (current output)
Digital filter 1st degree (0 to 8) s
Induced current required ≤ 3.5 mA
Current limit ≤ 23 mA
Switch on delay 4 s (during power 1a = 3.8 mA)
Electronic response time 1 s
Failure Mode:
Undershooting measurement range Decrease to 3.8 mA
Exceeding measurement range Increase to 20.5 mA
Sensor breakage/short circuit ≤ 3.6 mA or ≥ 21.0 mA
Electronic Connection:
Power supply Ub = (10 to 30) V dc, polarity protected
Allowable ripple Uss ≤ 5 V at Ub ≥ 13 V, fmax = 1 kHz


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