Manual

For accurate full scale measurements below -40 degrees, you may need to complete the full scale cold junction
calibration procedure (Refer to Section 16.3.1, Special Cold-Junction Calibration).
Calibration: NIST #135, DIN 43710
Reference Junction: Either a remote ice-point cell or an oven can be used in place of the Cold-Junction Compensation
Board. Curvalinear correction to better than 40 dB ambient temperature rejection.
33.5 RTD Input
RTD Type Temperature : Accuracy
Celsius Fahrenheit
Pt100/NIST -200 to 850 : 0.2 -328 to 1562 : 0.3
Pt100/DIN -200 to 900 : 0.2 -328 to 1652 : 0.3
Cu10(Linear) -200 to 200 : 1.0 -328 to 392 : 2.0
(Either of the two linearizations or the non-linearized scaling may be applied to RTDs with R-zero values as low as 10
ohms or as high as 1000 ohms, using field calibration and selection of excitation and input range.)
33.5 RTD Input continued
RESOLUTION: 1, 0.1, 0.01
CURRENT:
160 μA, factory calibrated, auto-compensation
EXCITATION: 1.6 mA, can be field calibrated with EEPROM storage (RTDs
or OHMS):
LEAD RESISTANCE (for specified accuracy)
THERMOCOUPLES: to 100 ohms, total
2-wire 100 ohm RTD: 50 milliohms/lead
3-wire 100 ohm RTD: 5 ohms/lead, balanced
4-wire 100 ohm RTD: 10 ohms total, unbalanced
33.6 General
SCALE:
+0.000001 to +500000 or –0.0001 to –99999.
OFFSET: Zero to +999999
POLARITY: unipolar/bipolar, programmable
NOISE REJECTION
NMR: 60 dB, 50 or 60 Hz, + selected filter
CMR: 120 dB
ACCURACY at 25 ºC
MAX ERROR: ±0.005% of reading
SPAN TEMPCO: less than 20 ppm/ºC
WARMUP: 55 minutes to rated accuracy. It is recommended that the unit
be continuously running to insure its accuracy.
CONVERSION TECHNIQUE: Delta-Sigma
RESOLUTION: 24-bit A/D
READING RATE: See Table 33-1
DISPLAY LEDs: red/amber/green 6-digit, 9-segment color changing, 17.3 mm
(0.68”) H x 10.2 mm (0.40”) W; 4 alarm indicators;
o
C,
o
F, &
o
K
SYMBOLS: -.8.8.8.8.8. or 8.8.8.8.8.8
DECIMAL POINT POSITION: Programmable
SENSOR EXCITATION: 1.5 to 11 Vdc, to 60 mA Max
10 V, to 30 mA
24 V, to 25 mA
OUTPUTS
STANDARD: 4, isolated open collector; 150 mA at 1 V sink; 30 V open.
ANALOG OUTPUT, OPTIONAL: 0-5 V, 1-5 V, 0-10 V, 0-20 mA, 4-20 mA level; 14-bit
CF 156 75 M2544/N/0505