Series 477	Handheld Digital Manometer
	Selectable Pressure Units, +/-0.5% Accuracy, FM Approved Intrinsically
	Safe for Hazardous Locations, Class 1, Div.1, Group A, B, C, D, T4
New Low Pressure Ranges
USB Option Comes with Cable and Software for Easy Data Downloading.
Instant Selection from up to Nine English/Metric Units.
Stores 40 Readings in Memory for Later Reference.
Measure Positive, Negative or Differential Pressures.
Large Easy-to-Read 0.4” LCD Display Includes       Switchable Backlight for Great Visibility --- Anywhere!
Both Audible and Visual Overpressure Alarms.
Includes + and – Indicators plus Low Battery Warning.
Operates up to 100 Hours on a Single 9 Volt Battery.
SPECIFICATIONS
Service: Air and compatible gases. FM models air and compatible combustible gases.
Wetted Materials: Consult factory.
Accuracy: +/-0.5% F.S., 60 to 78๐F (15.6 to 25.6๐C); +/-1.5% F.S. from 32 to 60๐F and 78 to 104๐F (0 to 15.6๐C and 25.6 to 40๐C).
Pressure Hysteresis: +/-0.1% of full scale.
Temperature Limits: 0 to 140๐F (-17.8 to 60๐C).
Compensated Temperature Limits: 32 to 104๐F (-0 to 40๐C).
Storage Temperature Limits: -4 to 176๐F (-20 to 80๐C).
Display: 0.42” (10.6 mm) 4 digit LCD
Response Time: 1 seconds.
Power Requirements: 9 volt alkaline battery. Battery included but not connected.
Weight: 10.2 oz (289 g).
Connections: Two barbed connections for use with 1/8” (3.18 mm) or 3/16” (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8” (3.18 mm) I.D x 1/4” (6.35 mm) O.D. tubing for 477-7-FM & 477-8-FM only.
Agency Approvals: CE and FM, USB models are not FM approved Intrinsically safe.
Model Number		Range	Maximum Pressure
477-000-FM		0-1.000 in w.c.	5 psig
477-00-FM		0-4.000 in w.c.	5 psig
477-0-FM		0-10.00 in w.c.	5 psig
477-1-FM		0-20.00 in w.c.	10 psig
477-2-FM		0-40.00 in w.c.	10 psig
477-3-FM		0-200.0 in w.c.	30 psig
477-4-FM		0-10.00 psi	30 psig
477-5-FM		0-20.00 psi	60 psig
477-6-FM		0-30.00 psi	60 psig
477-7-FM		0-100.0 psi	150 psig
477-8-FM		0-150.0 psi	200 psig