The PTX 500 Series provide highly accurate and stable pressure readings, due to their tailored design. The instruments combine micro machined silicon diaphragms with fully welded stainless steel and Hastellot parts. The silicon sensors minimise output noise, non-linearity and improve long term stability.
Each sensor can be calibrated to customer-selected ranges and pressure units. Detachable electrical connectors (although not available on submersible units) provide access to independent zero and span trim controls. Should a configuration be required whilst on site, such as to the electrics or pressure connections, then replacement parts and screw-in pressure adaptors are available. Each transmitter includes RFI/EMC and electrical spike protection, and Intrinsically Safe approved units are available as an option.
| Operating Pressure Range |
Any pressure unit and (zero based) span available between 250 mbar and 700 bar full scale to gauge and absolute formats: spans down to 100 mbar available in gauge format only. |
| Standard Ranges |
0 to 100, 160 mbar (gauge only)
0 to 250, 400, 600 mbar, 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60 bar gauge and absolute
0 to 100, 160, 250, 400, 600, 700 bar sealed gauge and absolute |
| Overpressure |
The rated pressure can be exceeded by the following multiples without degrading performance:
2 bar for ranges up to 600 mbar
3 x for 1 bar to 40 bar ranges
2 x for ranges above 40 bar |
| Pressure Media |
Fluids compatible with a fully welded assembly of 316 stainless steel and Hastelloy C276 (NACE compatible grades) |
| Transmitter Supply Voltage |
9-30vdc. This voltage must appear across the transmitter terminals. |
| Output Current |
4-20mA (two-wire configurations) proportional for zero to full scale pressure |
| Zero Offset and Span Setting |
+/- 0.05mA
+/-5% site adjustable by sealed, non-interacting potentiometers (resolution of potentiometers +/-1 uA)
(PTX 530 not adjustable) |
| Combined Non-Linearity, Hysteresis and Repeatability |
Terminal definition: The output will not deviate from the straight line connecting zero and full scale output by more than 0.3% FS (Typically 0.15% FS). Best line definition: +/- 0.2% FS (Typically +/-0.1% FS) |
| Operating Temperature Range |
Ambient: -20 to 80 deg c
Process Media: -30 to 120 deg c
Storage: -40 to 125 deg c |
| Temperature Effects |
For ranges of 400 mbar and above the output will not deviate from room temperature more than:
1% FS over -10 to 50 deg c
2% FS over -20 to 80 deg c
Typically 0.7% FS., -10 to 50 deg c
Typically 1.5% FS., -20 to 80 deg c
For ranges below 400 mbar these values will increase pro-rata with calibrated span. |
| Weight |
PTX 500 core: 330 grams, excluding optional electrical connections, cable, etc. |
| Pressure Connection |
G 1/4 female
Screw-in male/male adaptors available |
| Electrical Connection |
Versions available for IP50 to IP68 ratings. Mating parts supplied with plug/socket versions (PTX 510 and 560). 1 metre integral cable supplied as standard on PTX 520 and 530 models. Longer lengths available on request. |
| Intrinsic Safety (Optional) |
These transmitters can be certified for use with barrier systems to EEx is gas group IIC with a T4 rating for ambient temperatures up to 80 deg c to BS5501 part 7 and Cenelec EN50 020. |
| Marine Approval |
Certified for use in vessels classed with RINA (certificate 5/438/93) |
| Accessories available to order |
G 1/4 male (P/N 190-040)
1/4 NPT male (P/N 190-038)
7/16 UNF male (MS33656-4 compatible) (P/N 190-042)
M14 x 1.5 male (P/N 190-036)
G 1/2 (pressure gauge connection) (P/N 190-039)
Adaptors manufactured in 316 stainless steel.
Bonded seal (P/N 192-204-053) to fit between transmitter and screw-in male/male adaptors (Nitrile and zinc plated steel)
Cable (P/N 192-004) for gauge ranges of 60 bar and below the PTX 510 requires this 6mm OD vented cable. |
| Ordering Information |
PTX *-*-*
First * represents electrical connection:
- 0 soldier tages (IP50)
- 1 DIN 43550 plug/socket (IP65)
- 2 Integral cable assembly (IP63)
- 3 Submersible cable assembly
- 4 Rotatable conduit (IP65)
- 5 M20 conduit (IP65)
- 6 MIL-C-26482 plug/socket
Second * represents temperature effects:
- 0 -10 to 50 deg c
- 1 -20 to 80 deg c
Third * represents approvals
- 0 (or omit) Commercial
- 1 Intrinsically Safe
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