Model 13A and 15A

Pneumatic series d/p cell transmitters models 13A; 15A

The Foxboro® brand Models 15A, 13A, and 13HA pneumatic d/p Cell transmitters measure differential pressure and transmit a standard pneumatic signal to receivers which may be several hundred metres or yards away.

PROVEN DEPENDABILITY

Foxboro d/p Cell Transmitters have been the standard of process industry ever since they were developed and introduced for sale more than 30 years ago. Many thousands of successful, troublefree installations have demonstrated the exceptional dependability of these outstanding transmitters.

APPLICATION VERSATILITY

These transmitters are used in flow, liquid level, density, and low pressure measurement applications. They offer wide span adjustability and broad zero suppression and zero elevation capabilities within the range limits for each series. They are ideal for the most demanding applications.

EASE OF MAINTENANCE

The simple design of the topworks and the fieldreplaceable capsule makes servicing these transmitters exceptionally easy and economical. Interchangeability of most of the topworks parts with other Foxboro pneumatic force balance transmitters provides further savings to the user by minimizing spare parts inventory.

Mounting

Transmitter mounts direct to the process piping or onto a nominal DN 50 or 2 in pipe. A bracket for pipe mounting is always supplied.

Air Connections

The supply and output connections are tapped for 1/4 NPT.

Output Signal

20 to 100 kPa, 3 to 15 psi, or 0.2 to 1.0 bar or kg/cm, as specified.

Air Consumption Under Normal Operation

0.42 m3/h (0.25 cfm) at standard conditions.

Suppressed-Zero and Elevated-Zero Ranges

The optional zero elevation or zero suppression kits (Model Code Optional Selections -L or -R) allow adjustment of the measured pressure range within the full range limits of the capsule. These kits may be added in the field. Refer to Figures 1 and 2 for examples of suppressed-zero and elevated-zero ranges.

PERFORMANCE SPECIFICATIONS

Performance Stated under Reference Operating Conditions, unless otherwise specified.

• Accuracy
• Includes Linearity, hysteresis, and repeatability
• MODEL 15A
• 0.5% of span
• MODELS 13A AND 13HA
• For Spans between 5 and 130 kPa, 20 and 525 inH2O, or 50 and 1300 mbar differential pressure (dP): 0.5% of span For Spans between 130 and 210 kPa, 525 and 850 inH2O, or 1300 and 2100 mbar dP: dP 0.75% of span
• Dead Band
• 0.05% of span
• Repeatability
• 0.1% of span
• Hysteresis
• MODEL 15A
• 0.0025 kPa, 0.01 inH2O, or 0.025 mbar; or 0.10% of span, whichever is greater
• MODELS 13A AND 13HA
• 0.12 kPa, 0.05 inH2O, or 0.12 mbar; or 0.10% of span, whichever is greater
• Reproducibility
• Includes effects of hysteresis, repeatability, dead band, and drift over a one-hour period
• MODEL 15A
• 0.2% of span
• MODELS 13A AND 13HA
• 0.15% of span
• Vibration Effect
• The zero shift is less than 1.5% of span for peak-to-peak  displacement of 6.4 mm (0.25 in) between 1 and 9 Hz, or constant acceleration of 10 m/s2 (1 “g”) from 9 to 100 Hz.
• Supply Pressure Effect
• The maximum zero shift is 0.05% of span for 1 kPa (0.01 bar or kg/cm2) change in supply pressure. A 1 psi change in supply pressure results in a maximum zero shift of 0.35% of span.

Position Effect

The 15A Series must be operated with the capsule in the vertical plane. The 13A and 13HA Series may be mounted up to 90 deg from vertical and the zero shift may be corrected with the zero adjustment screw.

Materials of Construction

NonWetted Parts

COVER

Blue, high impact, glass-filled polycarbonate.

COVER GASKET

Silicone rubber and cork composition

BODY BOLTS AND NUTS

Zinc plated alloy steel per ASTM A 193 grade B7 and ASTM A 194 grade 2H, respectively, or equivalent. 17-4 PH if Hastelloy C body is specified. See Optional Features section for Monel or 17-4 PH stainless steel bolting.

CAPSULE FILL MATERIA

Dow Corning dimethylsiloxane (DC-200) with viscosity of 500 mm2/s (500 cSt) at 25C (77F). Some options require other fill materials. See Optional Features section.

Environmental Protection

The transmitter housing has the dusttight and weatherproof rating of IP53 as defined by IEC 60529, and provides the raintight protection rating of NEMA 3.

Approximate Mass

MODEL 15A 13.6 kg (30 lb)

MODEL 13A 8.6 kg (19 lb)

MODEL 13HA 13 kg (29 lb)

Supplied by DP-Flow