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Manual: 152-082010 301-305-306_303-307 Series Page 5 of 35
1.2. Specifications
Accuracy..........................................................HFM-301/305 & HFC-303/307: ±1% full scale (F.S.)
...........................................................................................................HFM-306; ±3% full scale (F.S.)
Repeatability ................................................................................................................ ±0.07% of F.S.
Maximum pressure................................................................................................500 psi [3.45 MPa]
..............................................................................................................................300 psi (HFM-306)
Maximum pressure................................................................................................1000 psi [6.9 MPa]
..................................................................... (with high pressure option on HFM-301/HFC303 only)
Pressure coefficient.................................................................................<0.026% of reading/psi (N2)
...............................................................................................See pressure section for pressure errors.
Operating temperature...........................................................0-60°C in non-condensing environment
Temperature coefficient (zero).......................................................maximum ±0.085%/°C (0-60 0C)
Temperature coefficient (span) ................................................... maximum ±0.092%/°C (15-50 0C)
Leak integrity........................................................................................................... <1x10-9 std. cc/s.
Standard output................................................................................... 0-5 VDC (load min 2k Ohms)
Optional output ....................................................................................4 -20 mA. (load < 600 Ohms)
Power requirements ............................................................................±(15) VDC @ 55 mA (meters)
.....................................................................................................± (15) VDC @ 150 mA (controller)
................................................................................................................... Class 2 power 150VA max
Wetted materials ........................................................ 302/304 & 316 stainless steel, nickel 200, Viton
..................................................................................................................... Kalrez® (controller only)
Attitude sensitivity of zero .................................................. < ±0.25% F.S. for 90° without re-zeroing
..................................................................................................................{N2 at 19.7 psi (135 KPa)}
Attitude sensitivity of span...................................................................................< ±0.06% of reading
..................................................................................................................{N2 at 19.7 psi (135 KPa)}
Weight ...................................................................................................... HFM-301; 3.5 lbs. (1.6 kg)
...................................................................................................................HFC-303; 5.3 lbs. (2.4 kg)
.................................................................................................................. HFM-305; 8.0 lbs. (3.7 kg)
.............................................................................................................. HFM-306; 28.8 lbs. (13.2 kg)
...............................................................................................................HFC-307; 15.3 lbs. (6.94 kg)
Electrical connector ......................................................................................15 pin subminiature “D”
Fitting options..............................................HFM-301/HFC-303: 1/2” Swagelok®, 3/4” Swagelok®,
....................................................................................................................... 1/2”VCR®, 1/2”VCO®
...................................................................HFM-305/HFC-307: 1”Swagelok®, 1”VCR®, 1”VCO®
..........................................................HFM-306: 1” Swagelok®, 1”VCR®, 1”VCO®, 2” Swagelok®