Input specifications — sample calculations of typical sensor performance
8 Control stability of the electronics only, in an ideal thermal system9 Current source error has negligible effect on measurement accuracy10 Diode input excitation current can be set to 1 mA 11 Current source error is removed during calibration12 Accuracy specification does not include errors from room temperature compensation
Number of inputs
4 (8 with scanner option)
Input configuration
Inputs can be configured from the front panel to accept any of the supported input types. Thermocouple and capacitance inputs require an optional input card that can be installed in the field.
Supported option cards
Thermocouple (3060), capacitance (3061), or scanner (3062)
Option slots
1
Isolation
Sensor inputs optically isolated from other circuits but not from each other
A/D resolution
24-bit
Input accuracy
Sensor dependent, refer to Input Specifications table
Measurement resolution
Maximum update rate
10 rdg/s on each input, 5 rdg/s when configured as 100 kΩ NTC RTD with reversal on, 2 rdg/s on each scanned input (scanner option only)
Maximum update rate (scanner)
The maximum update rate for a scanned input is 10 rdg/s distributed among the enabled channels. Any channel configured as 100 kΩ RTD with reversal on changes the update rate for the channel to 5 rdg/s.
10 rdg/s (100 ms/rdg)
5 rdg/s (200 ms/rdg)
3⅓ rdg/s (300 ms/rdg)
2½ rdg/s (400 ms/rdg)
2 rdg/s (500 ms/rdg)
*No channels configured for 100 kΩ NTC RTD
Autorange
Automatically selects appropriate NTC RTD or PTC RTD range
User curves
Room for 39 200-point CalCurves™ or user curves
SoftCal™
Improves accuracy of DT-470 diode to ±0.25 K from 30 K to 375 K; improves accuracy of platinum RTDs to ±0.25 K from 70 K to 325 K; stored as user curves
Math
Maximum and minimum
Filter
Averages 2 to 64 input readings
Control outputs
4
Heater outputs (outputs 1 & 2)
Control type
Closed loop digital PID with manual heater output or open loop
Update rate
10/s
Tuning
Autotune (one loop at a time), PID, PID zones
Control stability
Sensor dependent, see Input Specifications table
PID control settings
Proportional (gain)
0 to 1000 with 0.1 setting resolution
Integral (reset)
1 to 1000 (1000/s) with 0.1 setting resolution
Derivative (rate)
1 to 200% with 1% resolution
Manual output
0 to 100% with 0.01% setting resolution
Zone control
10 temperature zones with P, I, D, manual heater out, heater range, control channel, ramp rate
Setpoint ramping
0.1 K/min to 100 K/min
Closed loop PID, PID zones, warm up heater mode, manual output, or monitor output
0 to 1000 (1000/s) with 0.1 setting resolution
Derivative (rate
0 to 200% with 1% resolution
Warm up heater mode settings
Warm up on percentage
0 to 100% with 1% resolution
Warm up mode
Continuous control or auto-off
Analog output settings
Scale
User selected
Data source
Temperature or sensor units
Settings
Input, source, top of scale, bottom of scale, or manual
Type
Variable DC voltage source
Range
±10 V
Resolution
16-bit, 0.3 mV
Accuracy
±2.5 mV
Noise
0.3 mV RMS
Minimum load resistance
1 kΩ (short-circuit protected)
Connector
Detachable terminal block
Display
8-line by 40-character (240 × 64 pixel) graphic LCD display module with LED backlight
Number of reading displays
1 to 8
Display units
K, °C, V, mV, Ω
Reading source
Temperature, sensor units, max, and min
Display update rate
2 rdg/s
Temperature display resolution
0.0001° from 0° to 99.9999°, 0.001° from 100° to 999.999°, 0.01° above 1000°
Sensor units display resolution
Sensor dependent, to 6 digits
Other displays
Input name, setpoint, heater range, heater output, and PID
Setpoint setting resolution
Heater output display
Numeric display in percent of full scale for power or current
Heater output resolution
0.01%
Display annunciators
Control input, alarm, tuning
LED annunciators
Remote, Ethernet status, alarm, control outputs
Keypad
27-key silicone elastomer keypad
Front panel features
Front panel curve entry, display contrast control, and keypad lock-out
IEEE-488.2
Capabilities
SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1
Reading rate
To 10 rdg/s on each input
Software support
LabVIEW™ driver
USB
Function
Emulates a standard RS-232 serial port
Baud rate
57,600
B-type USB connector
Ethernet
TCP/IP, web interface, curve handler, configuration backup, chart recorder
RJ-45
Alarms
Number
4 (8 with scanner option), high and low for each input
Source, high setpoint, low setpoint, deadband, latching or non- latching, audible on/off, and visible on/off
Actuators
Display annunciator, beeper, and relays
Relays
2
Contacts
Normally open (NO), normally closed (NC), and common (C)
Contact rating
30 VDC at 3 A
Operation
Activate relays on high, low, or both alarms for any input, or manual mode
Ambient temperature
15 °C to 35 °C at rated accuracy; 5 °C to 40 °C at reduced accuracy
Power requirement
100, 120, 220, 240 VAC, ±10%, 50 or 60 Hz, 250 VA
Size
435 mm W × 89 mm H × 368 mm D (17 in × 3.5 in × 14.5 in), full rack
Weight
7.6 kg (16.8 lb)
Approval
CE mark, RoHS
Cryogenic Accessories