Model 350 Specifications

Input specifications — sample calculations of typical sensor performance

Standard inputsSensor temperature coefficient Input range Excitation current Display resolution Measurement resolution6Electronic accuracy (at 25 °C)Measurement temperature coefficientElectronic control stability7
NTC RTD/
PTC RTD
10 mV
Negative/positive0 Ω to 10 Ω1 mA90.1 mΩ0.1 mΩ±0.002 Ω ±0.06% of rdg(0.01 mΩ + 0.001% of rdg)/°C±0.2 mΩ
0 Ω to 30 Ω300 µA90.1 mΩ0.3 mΩ±0.002 Ω ±0.06% of rdg(0.03 mΩ + 0.001% of rdg)/°C±0.6 mΩ
0 Ω to 100 Ω100 µA91 mΩ1 mΩ±0.01 Ω ±0.04% of rdg(0.1 mΩ + 0.001% of rdg)/°C±2 mΩ
0 Ω to 300 Ω30 µA91 mΩ3 mΩ±0.01 Ω ±0.04% of rdg(0.3 mΩ + 0.001% of rdg)/°C±6 mΩ
0 Ω to 1 kΩ10 µA910 mΩ10 mΩ±0.1 Ω ±0.04% of rdg(1 mΩ + 0.001% of rdg)/°C±20 mΩ
0 Ω to 3 kΩ3 µA910 mΩ30 mΩ±0.1 Ω ±0.04% of rdg(3 mΩ + 0.001% of rdg)/°C±60 mΩ
0 Ω to 10 kΩ1 µA9100 mΩ100 mΩ±1.0 Ω ±0.04% of rdg(10 mΩ + 0.001% of rdg)/°C±200 mΩ
0 Ω to 30 kΩ300 nA9100 mΩ300 mΩ±2.0 Ω ±0.04% of rdg(30 mΩ + 0.001% of rdg)/°C±600 mΩ
0 Ω to 100 kΩ100 nA91 Ω1 Ω±10.0 Ω ±0.04% of rdg(100 mΩ + 0.001% of rdg)/°C±2 Ω
0 Ω to 300 kΩ30 nA91 Ω3 Ω±30.0 Ω ±0.04% of rdg(300 mΩ + 0.001% of rdg)/°C±6 Ω
NTC RTD
1 mV
Negative0 Ω to 10 Ω100 µA90.1 mΩ1 mΩ±0.01 Ω ±0.04% of rdg(0.1 mΩ + 0.001% rdg)/°C±2 mΩ
0 Ω to 30 Ω30 µA90.1 mΩ3 mΩ±0.01 Ω ±0.04% of rdg(0.3 mΩ + 0.001% of rdg)/°C±6 mΩ
0 Ω to 100 Ω10 µA91 mΩ10 mΩ±0.1 Ω ±0.04% of rdg(1 mΩ + 0.001% of rdg)/°C±20 mΩ
0 Ω to 300 Ω3 µA91 mΩ30 mΩ±0.1 Ω ±0.04% of rdg(3 mΩ + 0.001% of rdg)/°C±60 mΩ
0 Ω to 1 kΩ1 µA910 mΩ100 mΩ±1.0 Ω ±0.04% of rdg(10 kΩ + 0.001% of rdg)/°C±200 mΩ
0 Ω to 3 kΩ300 nA910 mΩ300 mΩ±2.0 Ω ±0.04% of rdg(30 mΩ + 0.001% of rdg)/°C±600 mΩ
0 Ω to 10 kΩ100 nA9100 mΩ1 Ω±10.0 Ω ±0.04% of rdg(100 mΩ + 0.001% of rdg)/°C±2 Ω
0 Ω to 30 kΩ30 nA9100 mΩ3 Ω±30 Ω ±0.04% of rdg(300 mΩ + 0.001% of rdg)/°C±6 Ω
0 Ω to 100 kΩ10 nA91 Ω10 Ω±100 Ω ±0.04% of rdg(1 Ω + 0.001% of rdg)/°C±20 Ω


Scanner option
Model 3062
Sensor temperature coefficient Input range Excitation current Display resolution Measurement resolutionElectronic accuracy (at 25 °C)Measurement temperature coefficientElectronic control stability7
DiodeNegative0 V to 2.5 V 10 µA ± 0.05%810 µV10 µV±80 µV ±0.005% of rdg(10 µV + 0.0005% of rdg)/°C±20 µV
Negative0 V to 10 V10 µA ± 0.05%8100 µV20 µV±160 µV ±0.01% of rdg(20 µV + 0.0005% of rdg)/°C±40 µV
PTC RTDPositive0 Ω to 10 Ω1 mA90.1 mΩ0.2 mΩ±0.002 Ω ±0.01% of rdg(0.01 mΩ + 0.001% of rdg)/°C±0.4 mΩ
0 Ω to 30 Ω1 mA90.1 mΩ0.2 mΩ±0.002 Ω ±0.01% of rdg(0.03 mΩ + 0.001% of rdg)/°C±0.4 mΩ
0 Ω to 100 Ω1 mA91 mΩ2 mΩ±0.004 Ω ±0.01% of rdg(0.1 mΩ + 0.001% of rdg)/°C±4 mΩ
0 Ω to 300 Ω1 mA91 mΩ2 mΩ±0.004 Ω ±0.01% of rdg(0.3 mΩ + 0.001% of rdg)/°C±4 mΩ
0 Ω to 1 kΩ1 mA910 mΩ20 mΩ±0.04 Ω ±0.02% of rdg(1 mΩ + 0.001% of rdg)/°C±40 mΩ
0 Ω to 3 kΩ1 mA910 mΩ20 mΩ±0.04 Ω ±0.02% of rdg(3 mΩ + 0.001% of rdg)/°C±40 mΩ
0 Ω to 10 kΩ1 mA9100 mΩ200 mΩ±0.4 Ω ±0.02% of rdg(10 mΩ + 0.001% of rdg)/°C±400 mΩ
NTC RTD
10 mV
Negative0 Ω to 10 Ω1 mA90.1 mΩ0.15 mΩ±0.002 Ω ±0.06% of rdg(0.01 mΩ + 0.001% rdg)/°C±0.3 mΩ
0 Ω to 30 Ω300 µA90.1 mΩ0.45 mΩ±0.002 Ω ±0.06% of rdg(0.03 mΩ + 0.0015% of rdg)/°C±0.9 mΩ
0 Ω to 100 Ω100 µA91 mΩ1.5 mΩ±0.01 Ω ±0.04% of rdg(0.1 mΩ + 0.001% of rdg)/°C±3 mΩ
0 Ω to 300 Ω30 µA91 mΩ4.5 mΩ±0.01 Ω ±0.04% of rdg(0.3 mΩ + 0.0015% of rdg)/°C±9 mΩ
0 Ω to 1 kΩ10 µA910 mΩ15 mΩ + 0.002% of rdg±0.1 Ω ±0.04% of rdg(1 kΩ + 0.001% of rdg)/°C±30 mΩ ±0.004% of rdg
0 Ω to 3 kΩ3 µA910 mΩ45 mΩ + 0.002% of rdg±0.1 Ω ±0.04% of rdg(3 mΩ + 0.0015% of rdg)/°C±90 mΩ ±0.004% of rdg
0 Ω to 10 kΩ1 µA9100 mΩ150 mΩ + 0.002% of rdg±1.0 Ω ±0.04% of rdg(10 mΩ + 0.001% of rdg)/°C±300 mΩ ±0.004% of rdg
0 Ω to 30 kΩ300 nA9100 mΩ450 mΩ + 0.002% of rdg±2.0 Ω ±0.04% of rdg(30 mΩ + 0.001% of rdg)/°C±900 mΩ ±0.004% of rdg
0 Ω to 100 kΩ100 nA91 Ω1.5 Ω + 0.005% of rdg±10.0 Ω ±0.04% of rdg(100 mΩ + 0.002% of rdg)/°C±3 Ω ±0.01% of rdg


Thermocouple option
Model 3060
Sensor temperature coefficient Input range Excitation current Display resolution Measurement resolutionElectronic accuracy (at 25 °C)Measurement temperature coefficientElectronic control stability7
Thermocouple
Positive±50 mV NA0.1 µV0.4 µV±1 µV ±0.05% of rdg10(0.1 µV + 0.001% of rdg)/°C±0.8 µV


Capacitance option
Model 3061
Sensor temperature coefficient Input range Excitation current Display resolution Measurement resolutionElectronic accuracy (at 25 °C)Measurement temperature coefficientElectronic control stability7
CapacitancePositive or negative0.1 nF to 15 nF3.496 kHz
1 mA square wave
0.1 pF0.05 pF±50 pF ±0.1% of rdg2.5 pF/°C0.1 pF
1 nF to 150 nF3.496 kHz
10 mA square wave
1 pF0.5 pF±50 pF ±0.1% of rdg5 pF/°C1 pF

6 Measurement resolution measured at 4.2 K to remove the thermal noise of the resistor
7 Control stability of the electronics only, in an ideal thermal system
8 Current source error has negligible effect on measurement accuracy
9 Current source error is removed during calibration
10 Accuracy specification does not include errors from room temperature compensation

Thermometry

Number of inputs4 (8 with optional scanner card)
Input configurationInputs can be configured from the front panel to accept any of the supported input types. Thermocouple, capacitance, and diode inputs require an optional input card that can be installed in the field. Once installed, the optional inputs can be selected from the front panel like any other input type.
IsolationSensor inputs optically isolated from other circuits but not from each other
A/D resolution 24-bit
Input accuracySensor dependent, refer to Input Specifications table
Measurement resolutionSensor dependent, refer to Input Specifications table
Maximum update rate10 rdg/s on each non-scanned input
Maximum update rate (scanner)

The maximum update rate for a scanned input is 10 rdgs/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 rdgs/s.

Number of scanner channels enabled*Update rate
1

10 rdg/s(100 ms/rdg)

2

5 rdg/s(200 ms/rdg)

3

3⅓ rdg/s(300 ms/rdg)

4

2½ rdg/s(400 ms/rdg)

5

2 rdg/s(500 ms/rdg)

*No channels configured for 100 kΩ NTC RTD

AutorangeAutomatically selects appropriate NTC RTD or PTC RTD range
User curvesRoom 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

MathMaximum and minimum
Filter Averages 2 to 64 input readings

Sensor input configuration

 RTDDiode (option)Thermocouple (option)Capacitance (option)
Measurement type 4-lead differential4-lead differential2-lead differential, room temperature compensated4-lead differential, variable duty cycle
ExcitationConstant current with current reversal10 µA constant currentNAConstant current, 3.496 kHz square wave
Supported sensors100 Ω Platinum, 1000 Ω Platinum, Germanium, Carbon-glass, Cernox® and Rox™Silicon, GaAlAsMost thermocouple typesCS-501GR
Standard curvesPT-100, PT-1000, RX-102A, RX-202ADT-470, DT-670, DT-500-D, DT-500-E1 Type E, Type K, Type T, AuFe 0.07% vs. Cr, AuFe 0.03% vs. CrNA
Input connector6-pin DIN6-pin DINScrew terminals in a ceramic isothermal block6-pin DIN

Control

Control outputs 4
  
Heater outputs (outputs 1 & 2)
Control type Closed loop digital PID with manual heater output or open loop
Update rate10/s
TuningAutotune (one loop at a time), PID, PID zones
Control stability Sensor dependent, see Input Specifications table
PID control settings
    Proportional (gain) 0 to 9999 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 0.001 K/min to 100 K/min

Output 1

 25 Ω setting 50 Ω setting
Type Variable DC current source  
D/A resolution 16-bit
Max power 75 W 50 W
Max current 1.732 A 1 A
Voltage compliance (min)50 V 50 V
Heater load for max power25 Ω50 Ω
Heater load range10 Ω to 100 Ω  
Ranges5 (decade steps in power)
Heater noise1.2 µA RMS (dominated by line frequency and its harmonics)
GroundingOutput referenced to chassis ground
Heater connector Dual banana
Safety limitsCurve temperature, power up heater off, short circuit protection

Output 2

Type Variable DC current source  
D/A resolution 16-bit
Max power 1 W
Max current 100 mA
Voltage compliance (min)10 V
Heater load for max power100 Ω
Heater load range25 Ω to 2 kΩ
Ranges (100 Ω load)1 W, 100 mW, 10 mW, 1 mW, 100 µW
Heater noise<0.005% of range
GroundingOutput referenced to measurement common
Heater connector Dual banana
Safety limitsCurve temperature, power up heater off, short circuit protection

Analog outputs (outputs 3 & 4)

Control type Closed loop PID, PID zones, warm up heater mode, still heater, manual output, or monitor output
Warm up heater mode settings

Warm up on percentage

0 to 100% with 1% resolution

Warm up mode

Continuous control or auto-off
Monitor 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
Update rate 10/s
Range ±10 V
Resolution 16-bit, 0.3 mV
Accuracy ±2.5 mV
Noise0.3 mV RMS
Maximum current100 mA
Maximum power1 W (into 100 Ω)
Minimum load resistance100 Ω (short-circuit protected)
ConnectorDetachable terminal block


Front panel

Display8-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, nF 
Reading source Temperature, sensor units, max, and min
Display update rate 2 rdg/s
Temperature display resolution0.00001° from 0° to 9.99999°, 0.0001° from 10° 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 Same as display resolution (actual resolution is sensor dependent)
Heater output displayNumeric display in percent of full scale for power or current
Heater output resolution0.01%
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

Interfaces

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

Connector

B-type USB connector

Reading rate

To 10 rdg/s on each input

Software support

LabVIEW™ driver
Ethernet 

Function

TCP/IP, web interface, curve handler, configuration backup, chart recorder

Connector

RJ-45

Reading rate

To 10 rdg/s on each input

Software support

LabVIEW™ driver
Alarms  

Number

4 (8 with scanner option), high and low for each input

Data source

Temperature or sensor units

Settings

Source, high setpoint, low setpoint, deadband, latching or non- latching, audible on/off, and visible on/off

Actuators

Display annunciator, beeper, and relays
Relays 

Number

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

Connector

Detachable terminal block

General

Ambient temperature15 °C to 35 °C at rated accuracy; 5 °C to 40 °C at reduced accuracy
Power requirement100, 120, 220, 240 VAC, ±10%, 50 or 60 Hz, 220 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

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