The 410 series gravity meter is for mineral and oil exploration or scientific investigation where performance counts. It is a lightweight r ed gravity meter in standard, geodetic and thermostatic controlled models. All feature an advanced design damped quartz system which allows operation under difficult conditions and does not require clamping.

The thermostated model reduces survey costs by stabilizing the quartz system with a solid state electronically controlled internal heating element. The instrument then becomes immune to ambient diurnal changes which would otherwise necessitate regular base station readings. The temperature control module has five adjustable heating range settings to suit any temperature condition and minimize battery drain.

Accessories all models:

 Shipping container,

Field carrying pack,

Tripod with 51 cm (20 in.) legs, or 76 cm (30 in.) legs,

10 No. 112/1.2V lamps.

Accessories for thermostated models:

 Charger 110v/220v AC,

2 Battery Power Pack .7 kg (1.5 lbs.) ea.,

Trickle charge cable,

10 No. 246/3.8V lamps

SPECIFICATIONS: STANDARD
PROSPECTOR 200
RANGE (Reset) ................ 3500- 6000 mgals
FINE COUNTER RANGE     2000 div approx. 200mgals
FINE COUNTER CONSTANT ...... 0.09 - 0.11 mgals
FINE COUNTER LINEARITY ...... 1 in 1000
ACCURACY .................................. 0.1 counter div. = .01 mgal
DRIFT ............................................. less than 0. 1 mgal/day
LEVEL SENSITIVITY ................... 40 sec./mm
TEMP. COEFFECIENT .......<0.003 mgal/hr/degC external change

SPECIFICATIONS: THERMOSTATED
PROSPECTOR 200T
RANGE (Reset) 3500 - 6000 mgals
FINE COUNTER RANGE  2000 div approx 200 mgals
FINE COUNTER CONSTANT .......... 0.09 - 0.11 mgals
FINE COUNTER LINEARITY ......... 1 in 1000
ACCURACY....................................... 0.1 counter div. = .01 mgal
DRIFT ................................................. less than 0.1 mgal/day
LEVEL SENSITIVITY ........................ 40 sec./mm

ALL THERMOSTATIC MODELS
TEMP. STABILITY ................................................... to +/- 0.10C
THERMOSTATIC RANGE ....................... 5, 15, 25, 35 and 45-C
POWER SUPPLY .............. 10.8V DC sealed rechargeable battery
OPERATIONAL TIME. min 10 hours at temperature differential of 20C

BATTERY LIFE .............................. up to 1000 charge cycles