Home > Products > Temperature products > Cryogenic temperature controllers > Model 336 cryogenic temperature controller/technical-specifications

Model 336 specifications

Input specifications — sample calculations of typical sensor performance

Standard inputs and scanner option Model 3062	Input range	Excitation current	Display resolution	Measurement resolution	Electronic accuracy at 25 °C⁸ [for the 3062 scanner option card]	Measurement temperature coefficient	Electronic control stability⁹
Diode Negative sensor temperature coefficient	0 V to 2.5 V	10 µA ±0.05%^{10, 11}	10 µV	10 µV	±80 µV ±0.005% of rdg [±250 µV ±0.025% of rdg]	(10 µV + 0.0005% of rdg)/°C	±20 µV
Diode Negative sensor temperature coefficient	0 V to 10 V	10 µA ±0.05%^{10, 11}	100 µV	20 µV	±320 µV ±0.01% of rdg [±1 mV ±0.03% of rdg]	(20 µV + 0.0005% of rdg)/°C	±40 µV
PTC RTD Positive sensor temperature coefficient	0 Ω to 10 Ω	1 mA¹²	0.1 mΩ	0.2 mΩ	±0.002 Ω ±0.01% of rdg [±0.002 Ω ±0.03% of rdg]	(0.01 mΩ + 0.001% of rdg)/°C	±0.4 mΩ
	0 Ω to 30 Ω	1 mA¹²	0.1 mΩ	0.2 mΩ	±0.002 Ω ±0.01% of rdg [±0.002 Ω ±0.03% of rdg]	(0.03 mΩ + 0.001% of rdg)/°C	±0.4 mΩ
	0 Ω to 100 Ω	1 mA¹²	1 mΩ	2 mΩ	±0.004 Ω ±0.01% of rdg [±0.004 Ω ±0.03% of rdg]	(0.1 mΩ + 0.001% of rdg)/°C	±4 mΩ
	0 Ω to 300 Ω	1 mA¹²	1 mΩ	2 mΩ	±0.004 Ω ±0.01% of rdg [±0.004 Ω ±0.03% of rdg]	(0.3 mΩ + 0.001% of rdg)/°C	±4 mΩ
	0 Ω to 1 kΩ	1 mA¹²	10 mΩ	20 mΩ	±0.04 Ω ±0.02% of rdg [±0.04 Ω ±0.04% of rdg]	(1 mΩ + 0.001% of rdg)/°C	±40 mΩ
	0 Ω to 3 kΩ	1 mA¹²	10 mΩ	20 mΩ	±0.04 Ω ±0.02% of rdg [±0.04 Ω ±0.04% of rdg]	(3 mΩ + 0.001% of rdg)/°C	±40 mΩ
	0 Ω to 10 kΩ	1 mA¹²	100 mΩ	200 mΩ	±0.4 Ω ±0.02% of rdg [±0.4 Ω ±0.04% of rdg]	(10 mΩ + 0.001% of rdg)/°C	±400 mΩ
NTC RTD 10 mV Negative sensor temperature coefficient	0 Ω to 10 Ω	1 mA¹²	0.1 mΩ	0.15 mΩ	±0.002 Ω ±0.06% of rdg [±0.002 Ω ±0.08% of rdg]	(0.01 mΩ + 0.001% rdg)/°C	±0.3 mΩ
	0 Ω to 30 Ω	300 µA¹²	0.1 mΩ	0.45 mΩ	±0.002 Ω ±0.06% of rdg [±0.002 Ω ±0.08% of rdg]	(0.03 mΩ + 0.0015% of rdg)/°C	±0.9 mΩ
	0 Ω to 100 Ω	100 µA¹²	1 mΩ	1.5 mΩ	±0.01 Ω ±0.04% of rdg [±0.01 Ω ±0.06% of rdg]	(0.1 mΩ + 0.001% of rdg)/°C	±3 mΩ
	0 Ω to 300 Ω	30 µA¹²	1 mΩ	4.5 mΩ	±0.01 Ω ±0.04% of rdg [±0.01 Ω ±0.06% of rdg]	(0.3 mΩ + 0.0015% of rdg)/°C	±9 mΩ
	0 Ω to 1 kΩ	10 µA¹²	10 mΩ	15 mΩ + 0.002% of rdg	±0.1 Ω ±0.04% of rdg [±0.1 Ω ±0.06% of rdg]	(1 mΩ + 0.001% of rdg)/°C	±30 mΩ ±0.004% of rdg
	0 Ω to 3 kΩ	3 µA¹²	10 mΩ	45 mΩ + 0.002% of rdg	±0.1 Ω ±0.04% of rdg [±0.1 Ω ±0.06% of rdg]	(3 mΩ + 0.0015% of rdg)/°C	±90 mΩ ±0.004% of rdg
	0 Ω to 10 kΩ	1 µA¹²	100 mΩ	150 mΩ + 0.002% of rdg	±1.0 Ω ±0.04% of rdg [±1.0 Ω ±0.06% of rdg]	(10 mΩ + 0.001% of rdg)/°C	±300 mΩ ±0.004% of rdg
	0 Ω to 30 kΩ	300 nA¹²	100 mΩ	450 mΩ + 0.002% of rdg	±2.0 Ω ±0.04% of rdg [±2.0 Ω ±0.06% of rdg]	(30 mΩ + 0.001% of rdg)/°C	±900 mΩ ±0.004% of rdg
	0 Ω to 100 kΩ	100 nA¹²	1 Ω	1.5 Ω + 0.005% of rdg	±10.0 Ω ±0.04% of rdg [±10.0 Ω ±0.06% of rdg]	(100 mΩ + 0.002% of rdg)/°C	±3 Ω ±0.01% of rdg

Thermocouple option Model 3060-F	Input range	Excitation current	Display resolution	Measurement resolution	Electronic accuracy (at 25 °C)	Measurement temperature coefficient	Electronic control stability⁹
Thermocouple Positive sensor temperature coefficient	±50 mV	NA	0.1 µV	0.4 µV	±4.5 µV ±0.07% of rdg¹³	(0.1 µV + 0.001% of rdg)/°C	±0.8 µV

Capacitance option Model 3061	Input range	Excitation current	Display resolution	Measurement resolution	Electronic accuracy (at 25 °C)	Measurement temperature coefficient	Electronic control stability⁹
Capacitance Positive or negative sensor temperature coefficient	0.1 nF to 15 nF	3.496 kHz 1 mA square wave	0.1 pF	0.05 pF	±50 pF ±0.1% of rdg	2.5 pF/°C	0.1 pF
	1 nF to 150 nF	3.496 kHz 10 mA square wave	1 pF	0.5 pF	±50 pF ±0.1% of rdg	5 pF/°C	1 pF

⁸ With current reversal enabled for RTD measurements
⁹ Control stability of the electronics only, in an ideal thermal system
¹⁰ Current source error has negligible effect on measurement accuracy
¹¹ Diode input excitation current can be set to 1 mA
¹² Current source error is removed during calibration
¹³ Accuracy specification does not include errors from room temperature compensation

Thermometry

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

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

Sensor dependent, refer to Input Specifications table

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.

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

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

Sensor input configuration

	Diode/RTD	Thermocouple
Measurement type	4-lead differential	2-lead differential, room temperature compensated
Excitation	Constant current with current reversal for RTDs	NA
Supported sensors	Diodes: Silicon, GaAlAs RTDs: 100 Ω Platinum, 1000 Ω Platinum, Germanium, Carbon-glass, Cernox®, and Rox™	Most thermocouple types
Standard curves	DT-470, DT-670, DT-500-D, DT-500-E1, PT-100, PT-1000, RX-102A, RX-202A	Type E, Type K, Type T, AuFe 0.07% vs. Cr, AuFe 0.03% vs. Cr
Input connector	6-pin DIN	Screw terminals in a ceramic isothermal block

Control

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

Output 1

	25 Ω setting	50 Ω setting
Type	Variable DC current source
D/A resolution	16-bit
Max power	100 W	50 W
Max current	2 A	1 A
Voltage compliance	50 V	50 V
Heater load for max power	25 Ω	50 Ω
Heater load range	10 Ω to 100 Ω
Ranges	3 (decade steps in power)
Heater noise	0.12 µA RMS (dominated by line frequency and its harmonics)
Grounding	Output referenced to chassis ground
Heater connector	Dual banana
Safety limits	Curve temperature, power up heater off, short circuit protection

Output 2

	25 Ω setting	50 Ω setting
Type	Variable DC current source
D/A resolution	16-bit
Max power	50 W	50 W
Max current	1.41 A	1 A
Voltage compliance	35.4 V	50 V
Heater load range	10 Ω to 100 Ω
Heater load for max power	25 Ω	50 Ω
Ranges	3 (decade steps in power)
Heater noise	0.12 µA RMS (dominated by line frequency and its harmonics)
Grounding	Output referenced to chassis ground
Heater connector	Dual banana
Safety limits	Curve temperature, power up heater off, short circuit protection

Unpowered outputs (outputs 3 & 4)

Control type	Closed loop PID, PID zones, warm up heater mode, manual output, or monitor output
Tuning	Autotune (one loop at a time), PID, PID zones
Control stability	Sensor dependent, refer to Input Specifications table
PID control settings
Proportional (gain)	0 to 1000 with 0.1 setting resolution
Integral (reset)	0 to 1000 (1000/s) with 0.1 setting resolution
Derivative (rate	0 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
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
Update rate	10/s
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

Front panel

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	Same as display resolution (actual resolution is sensor dependent)
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

Interface

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 command and control, web interface, curve handler, configuration backup, chart recorder/p>
IPv6 compatibility	TCP/IP command and control, web interface only
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 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

You may also be interested in...

Cryogenic temperature sensors

Measure temperatures from <20 mK to over 1,500 K. A wide selection of diodes, RTDs, thermocouples, and mounting packages are available.

Click here for more information on Cryogenic temperature sensors.

Cryogenic accessories

Cryogenic and temperature measurement accessories include cable, wire, solder, heaters, insulating and conductive materials, and more.

Click here for more information on Cryogenic accessories.