Watlow Series 92 Instrukcja Użytkownika Pobierz pdf (Strona 2)

2 WATLOW Series 92 User's Manual

The Watlow Series 92 is a DIN rail-mounted (DIN EN

50022) analog control. If a DIN rail is not available, the

Series 92 can be mounted using two screws. The

control mode is ON/OFF, limit or PI. The input for the

Series 92 is a single Type J, K or T thermocouple, or

DIN curve RTD sensor input. For the output device,

choose from an electromechanical relay, switched DC

voltage (open collector), solid state relay, or an optional

variable burst-fired output.

Variable burst-fired is only

available with the PI version

, and can be used with DC

input solid state relays. Set point options include a

remote or integral setpot assembly.

General Description

Specifications

Control Mode

• Heat or cool, factory selectable.

ON/OFF

• Switching hysteresis: Typically 3°F/1.7°C

PI: Time proportional with automatic reset

• Proportional band adjust: Typically 5 to 50°F/2.8 to

27.8°C

• Cycle time, fixed: Typically 6 seconds

• Automatic reset, fixed: Typically 0.25 repeats/minute

Limit

• Latching

• High or low, factory selectable

• Internal reset switch and/or customer supplied

remote reset switch. Automatic reset on power loss.

Operator Interface

• LED indication of limit condition or status of load.

• Setpot.

• Dial scale calibrated to compensate for sensor

non-linearities.

• Dual °F & °C scales.

• Remote or integral.

Input

• Thermocouple or RTD available.

• Thermocouple may be isolated or grounded.

• Thermocouple, automatic cold junction compensation.

• RTD input 2 or 3 wire, platinum 100 @ 0°C cali-

brated for #3850 (DIN): 0.003850 / °C. Contact

Watlow for #3916 (JIS) 0.003916 / °C)curve.

• T/C and RTD sensor break protection de-energizes

output to protect system.

• Sensor and ranges available:

Thermocouple

J1: J t/c 32 to 600°F or 0 to 315°C

J2: J t/c 32 to 1382°F or 0 to 750°C

K1: K t/c 32 to 2282°F or 0 to 1250°C

T1: T t/c -328 to 662°F or -200 to 350°C

RTD

P1: -328 to 1112°F or -200 to 600°C

• Lead resistance effect for type J, K, or T thermo-

couple input: 200 of lead resistance will cause

less than 1°F error. Refer to the lead wire

manufacturer's specification on ohms per double

foot for type and gauge of wire.

Output

• Electromechanical relay, Form C, 5A @ 120/

240VAC. Minimum offstate impedance is 20K .

Warranted to 100,000 cycles.

• Solid State Relay, Form A, 0.5A @ 24 VAC mini-

mum, 264 VAC maximum, opto-coupled, zero-

crossed switching. Minimum off state impedance

is 20K for output "B", and 31M for output "K".

• Open collector, switched DC signal provides a

minimum turn ON voltage of 3VDC into a minimum

500 load; maximum ON voltage not greater than

32VDC into an infinite load.

• Variable time base, open collector, switched DC,

Form A signal provides a minimum turn ON voltage

of 3VDC into a minimum 500 load; maximum ON

voltage not greater than 32VDC into an infinite load.

Available for PI control only.

Accuracy

• Calibration accuracy and sensor conformity:

± 1% of span maximum, at 77°F ± 5°F (25°C ± 3°C)

ambient and rated line voltage.

• Setpoint Accuracy: < ± 3% of range.

• Temperature stability: Typically ± 5µV / °F ambient

for thermocouple. Typically < 1°F from 32 to 130°F

for RTD.

• Voltage stability: ± 0.01% of span / % of rated line

voltage.

Agency Approvals

• UL, CSA and FM pending.

• Patent pending.

Terminals

• Captive screw, cage clamp connection. 0.155"

(4mm) maximum diameter screwdriver blade.

22 - 12 maximum wire gauge

Power

• Factory selectable.

• 120VAC: 85 to 132VAC, 50/60 Hz.

• 208/240VAC: 175 to 264VAC, 50/60 Hz.

• 6VA power consumption.

Operating Environment

• 30 to 140°F/0 to 60°C.

• 0 to 90% RH, non-condensing.

• Storage Environment: -40 to 158°F/-40 to 70°C.

Weight

• Control: 0.75 lb (0.34kg)

• Setpot: 0.20 lb (0.09kg)

1 2 3 4 5 6 7 ... 12 13

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