Ashcroft A4 Intrinsically Safe and Non-Incendive Pressure Transmitter

PERFORMANCE SPECIFICATIONS
Reference temperature 70°F (21°C)
Accuracy, Three Classes (% Span):   ±.25   ±0.5   ±1.0
Includes non-linearity (Terminal Point Method), hysteresis,
non-repeatability, zero offset and span setting errors
Best Fit Straight Line* (BFSL):                ±.20   ±.40   ±.50
Includes non-linearity hysteresis, non-repeatability errors
*Add ±.05% for ranges above 5000 psi
Stability:
±0.25% Span/year @ reference conditions
Durability: Greater than 10 million cycles

ENVIRONMENTAL SPECIFICATIONS
Temperature Limits:
Storage:          –40 to +125°C               (–40 to 257°F)
Process:          –40 to +125°C               (–40 to 257°F)
Operating:       –40 to +125°C               (–40 to 257°F)
Compensated*:–20 to +85°C                 ( –4 to 185°F)
*Consult factory for other options
Temperature Effects: –20 to +85°C     (–4 to 185°F)
• 1.0% of Span for .25% Accuracy Class
• 2.0% of Span for .50% and 1.0% Accuracy Classes
Humidity Effects: No performance effects from
0 to 95% relative humidity, non-condensing,
0-100% RH with “W” enclosure.
*Consult factory

FUNCTIONAL SPECIFICATIONS
Response Time: <2ms
Pressure Ranges: Vacuum, gauge, compound and absolute
pressure from 0-5 psi through 0-10,000. Equivalent ranges
in bar available. See order guide section (reverse).
Vibration Effect:
Shock:           100g Peak, 11ms
Random:        10g RMS, 20-2000Hz
Sweep:           50-2000Hz, 5g peak
Position Effect: ±0.02% Typical
CE Mark (standard): EN 61326:1997 + A1: 1998 Annex A
Heavy Industrial Immunity (Annex A, Table A.1)
Light Industrial/Residential Emission (Table 4)
Overpressure (F.S.)*:     Proof              Burst
0#/vac. to 300 psi           1.5 x F.S.       min. 2 x F.S.
500-10,000 psi                1.2 x F.S.         1.5 x F.S.
*For higher overpressure ratings use XK8 option.

ELECTRICAL SPECIFICATIONS
Output Signal:       Supply Voltage: (unregulated)
                                  Minimum          Maximum
4-20mA*     (2 Wire)       12Vdc               30Vdc
*For Intrinsically Safe see entity parameters for supply voltage
and load limits. Refer to Ashcroft A4 Installation & Maintenance
document “I&M011-10166-A4.”
Power Requirements:
See load chart page 2
Electrical Terminations: See To Order section (reverse.)
for options
Circuit Protection: Reverse polarity and mis-wire protected
Insulation Resistance (Circuit to Case): 100Mohm @ 30Vdc

PHYSICAL SPECIFICATIONS
Case: Material 304SS
Wetted Materials: 316L SS diaphragm and pressure port,
optional 17-4PH SS diaphragm and 316L SS pressure port
(see How to Order Section).
Ingress Protection Rating:
Enclosure                         Code                 Rating
Basic                                 (S)               IP65, NEMA 4X
All Welded (w/o Z/S)          (W)               IP67, NEMA 6