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The Crystal Engineering APMi is able to read up to four pressure inputs with a single HPC50 handheld pressure calibrator. The APMi can either expand the range of the HPC50, view all four readings at the same time, or read two different differential pressures simultaneously.
Accuracy
| psi (Gauge Pressure) | |
| 18 to 28° C | |
| 0 to 30% of Range: | ±(0.01% of Full Scale) |
| 30 to 110% of Range: | ±(0.035% of Reading) |
| Vacuum* : | ±(0.05% of Full Scale**) |
| -20 to 50° C | |
| 0 to 30% of Range: | ±(0.015% of Full Scale) |
| 30 to 110% of Range: | ±(0.050% of Reading) |
| Vacuum* : | ±(0.05% of Full Scale**) |
| * Applies to 300 psi / 30 bar / 3 MPa and lower ranges only. Vacuum Range = -14.5 psi / -1.0 bar / -1MPa. ** Full Scale is the numerical value of the positive pressure range. | |
| psiA (Absolute Pressure with HPC50 BARO Option) | |
| All absolute accuracies are equivalent to the gauge pressure accuracies, except as noted below. | |
| 15 psi / 1 bar/100 kPa Range: | Gauge Accuracy + 0.005 psiA |
| 30 psi / 3 bar / 300 kPa Range: | Gauge Accuracy + 0.005 psiA |
| 100 psi / 10 bar / 1MPa Range: | Gauge Accuracy + 0.002 psiA |
| Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year. Exposure to environmental extremes of temperature, shock, and/or vibration may warrant a more frequent recertification period. All models indicate vacuum, but vacuum specification applies only where specified. Not recommended for continuous use at high vacuum. Refer to XP2i-DP data sheet for gauges that are intended for continuous high vacuum use. The BARO option allows you to toggle between gauge and absolute pressure using the same APMi module. | |
Sensor
| Wetted Materials | (wrench tight) 316 stainless steel (finger tight) 316 stainless steel and Viton® (internal o-ring) (15 psi / 1 bar / 100 kPa) 316 stainless steel and Viton |
| Diaphragm Seal Fluid | Silicone Oil |
| Connection | Crystal CPF Female |
| All welded, with a permanently filled diaphragm seal. Metal to metal cone seal; O-ring can be removed if necessary. 1/4" male NPT adapter is included unless BSP or M20 is specified. 1/4" medium pressure tube system is compatible with HIP LM4 and LF4 Series, Autoclave Engr SF250CX Male and Female Series. | |
Output
| Pressure Resolution | up to 6 digits |
| Display Update | up to 10 per second |
| Pressure resolution and display update are the maximum values available. The resolution of your Crystal device may be different. | |
Pressure Overload
| Overload Alarm | "+OL" in display at 110% F.S. |
Operating Temperature
| Temperature Range | -20 to 50° C (-4 to 122° F) |
| < 95% RH, non-condensing. No change in accuracy over operating temperature range , except as noted in the accuracy specifications. Gauge must be zeroed to achieve rated specification. Applies to all modules. | |
Storage Temperature
| Temperature Range | -40 to 75° C (-40 to 167° F) |
Enclosure
| Dimensions | 2.9 x 1.1 in (74.0 x 27.0 mm) |
| Weight | 0.39 lbs (176.0 g) |
Intrinsic Safety Approvals
 ATEX | Ex ia IIC T4/T3 Ga FTZU 18 ATEX 0043X |
 | Ex ia IIC T4/T3 Ga IECEx FTZU 18.0012X |
 | Exia Intrinsically Safe and Non-Incendive for Hazardous Locations: Class I, Division 1, Groups A, B, C, and D; Temperature Code T4/T3. Class I, Zone 0, AEx ia IIC T4/T3 Ga. |
Entity Parameters
Ui = 5.0 V
li = 740 mA
Pi = 880 mW
Ci = 9.2 μF
Li = 12 μH
Certifications
 | We declare that the APMi is in accordance with the Electromagnetic Compatibility Directive per our declaration(s). |
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