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Series 443, 445, 446

Description

Barksdale's 440 Series Intrinsically Safe Transducers provide high accuracy pressure measurement when operating in Class I, Division I environments. Intrinsically safe transducers prevent personal injury and machinery damage by preventing the explosion in the first place. External zener barriers are required in order to meet UL requirements for an intrinsically safe installation. The higher cost of having to install a zener barrier is offset with the comfort of knowing that an explosion will not occur within normal operating conditions. Three models are available: Series 443 (0-5V), Series 445 (4-20mA) and Series 446 (0-10V).

 

Features

  • High accuracy
  • Protection in hazardous environments, Class I, Div 2
  • Superior EMI, ESD and RFI protection
  • Rugged all-welded stainless steel construction
  • NEMA 4X
  • Built-in high pressure snubber (2000 psi and above)
  • cULus, CE approved
  • ATEX approved - 445 only

Technical specifications

General Specifications*

Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less
Input:
443:
446:
445:

Excitation voltage: 11 to 28 VDC
Excitation voltage: 14 to 28 VDC
Excitation voltage: 12 to 28 VDC
Supply Current: 3.0 mA maximum (no load)
Output:
443:



446:



445:

Output: 0.5 to 5.5 VDC
Full scale output: 5.0 VDC ± 0.8%
Zero output: 0.5 VDC ± 0.4%

Output: 1 to 11 VDC
Full scale output: 10 VDC ± 0.4%
Zero output: 1.0 VDC ± 0.2%

Output: 4 to 20 mA
Full scale output: 16 mA ± 1%
Zero output: 4 mA ± 2%
Wetted Parts: 17-4 PH (fitting) & 300 stainless steel (sensor)
Enclosure: NEMA 4, 300 series stainless steel
Response Time: 2 kHz
Pressure Connection: 1/4”-18 NPT male
Electrical Connection: 3 conductor for voltage series and 2 conductor for current series, 24 awg, PVC jacketed, shielded cable, 3 ft. (1 m) long with integral strain relief and case ground (standard).
Temperature Ranges:
Operating:
Compensated:
Storage:

-40° to 158°F (-40° to 70°C)
-40° to 158°F (-40° to 70°C)
-40° to 185°F (-40° to 85°C)
Temperature Shift:
Zero & Span:

0.01% per °F over compensated range reference
Vibration: 15 g’s, 10-2000 Hz, MIL-STD 202
Shock: 50 g’s, 11 mS, MIL-STD 202 Method 213, Cond. G.
Approvals: 445 only: Intrinsically safe pressure transducers are UL and cULus approved as telemetering equipment for use in hazardous locations (UL File E146589, WYMV, WYMV7) as follows:

Class I, Div. 1, Groups A, B, C & D
Class II, Groups E, F & G, when installed in accordance with control drawing 272148 (443); TD-B77 (445); 272147 (446).

DEMK009 ATEX 143402 Ex ia llCT4 / Ex ia D21T130°C, ATEX 112GD
Weight:
443 & 446:


445:

7.4 oz. (221 grams) to 1000 psi
9.9 oz. (281 grams) 2,000 psi and higher

7.4 oz. (210 grams) to 1000 psi
9.4 oz. (266 grams) 2,000 psi and higher
Warranty: 1 year warranty
* See product confi gurator for additional options.

Wiring Code

MILLIVOLT SERIES - 443 & 446
(T4/T5) (H3/H5) Signal
1 Red + Excitation
3 White + Output
2 Black Common
4 Bare Case Drain
MILLIAMP SERIES - 445
1 Red + Excitation
2 Black - Excitation
4 Bare Case Drain